A U.S. Army soldier holds two puppies he found at an observation post in the Aziz Khan Kats Mountain Valley range near Jalalabad in Afghanistan's Laghman province, April 15, 2011. (U.S. Army photo by Staff Sgt. Ryan Matson)

A U.S. Marine, left, communicates through an interpreter with an Afghan citizen on April 15, 2011. (U.S. Marine Corps photo by Cpl. Adam Leyendecker)

U.S. Army soldiers and civilian contractors remove debris from Simmons Army Airfield on Fort Bragg, N.C., April 18, 2011, after the area was hit with numerous tornadoes, April 16. (U.S. Army photo by Sharilyn Wells)

U.S. Navy Capt. Kevin Mannix completes his 1,000th arrested carrier landing on board the flight deck of the aircraft carrier USS Ronald Reagan, April 18, 2011. (U.S. Navy photo by Petty Officer 3rd Class Shawn Stewart)

A U.S. Army soldier patrols villages and fields around Mirmandab, Afghanistan, April 7, 2011. (U.S. Army photo by Sgt. 1st Class Marcus J. Quarterman)

U.S. Air Force airmen perform for Japanese visitors viewing cherry blossoms on Yokota Air Base, Japan, April 10, 2011. (U.S. Air Force photo by Staff Sgt. Samuel Morse)

U.S. Army soldiers return fire during a firefight with Taliban forces in Barawala Kalay Valley in Kunar province, Afghanistan, March 31, 2011. (U.S. Army photo by Pfc. Cameron Boyd)

U.S. soldiers conduct a dismounted patrol to Pacha Khak village, Afghanistan, April 7, 2011. (U.S. Army Photo by Spc. Kristina L. Gupton)

As seen through a night-vision device, U.S. Air Force personnel shine flashlights on an earthen flood levee as they monitor for problems with the flood protection barrier in Fargo, N.D., April 8, 2011. (U.S. Air Force photo by Senior …

U.S. soldiers are hoisted into a CV-22 Osprey tiltrotor aircraft during Emerald Warrior 2011 at Cannon AFB, N.M., March 1, 2011. (U.S. Air Force photo by Tech. Sgt. DeNoris Mickle)

A U.S. Marine cuts holes into a piece of the bridge with a torch during an operation on the Sistani Peninsula, Afghanistan, April 4, 2011. (U.S. Marine Corps photo by Lance Cpl. Bruno J. Bego)

A U.S. Army soldier, silhouetted in a shaded area, performs a retina scan to a local Afghan citizen near Kandahar Air Field, Afghanistan, April 3, 2011. (U.S. Air Force photo by Staff Sgt. Stephen Schester)

U.S. Army soldiers fire weapons at the enemy’s position during a combat engagement in northern Bala Murghab valley in Afghanistan's Baghdis province, April 4, 2011. (U.S. Air Force photo by Tech. Sgt. Kevin Wallace)

U.S. Army paratroopers conduct combat jump operations during a training exercise on Aviano Air Base, Italy, March 23, 2011. (U.S. Air Force photo by Staff Sgt. Nadine Y. Barclay)
 

U.S. soldiers sling-load a container of components for a cell phone tower, March 25, 2011, at Forward Operating Base Lagman in the Kandahar province of Afghanistan. (U.S. Army photo by Sgt. Jerry Wilson)

A U.S. Marine ensures chains and straps are properly secured during a mission to move an 11,500-pound Bobcat on Camp Bastion, Afghanistan, March 29, 2011. (U.S. Marine Corps photo by Lance Cpl. Bruno J. Bego)

U.S. Army paratroopers participate in an advanced rifle marksmanship course on Fort Bragg, N.C., March 23, 2011. (U.S. Army photo by Sgt. Michael J. MacLeod)

Sailors assigned to Riverine Squadron 3 and marines from the Royal Netherlands marine corps perform a right echelon maneuver in riverine assault boats at Camp Lejeune, N.C., March 22, 2011. (DoD photo by Petty Officer 2nd Class Paul D. …

An F/A-18C Hornet launches from the aircraft carrier USS Abraham Lincoln in the Pacific Ocean, March 18, 2011. (U.S. Navy photo by Petty Officer 2nd Class Brian Moralesi)

Marines assigned to theUSS Enterprise push ordnance into place to arm an F/A-18C Hornet, March 26, 2011. (U.S. Navy photo by Mass Communication Specialist Seaman Jesse L. Gonzalez)

Gunner's Mate 2nd Class Christopher DiBernardo gives a command during an M-240 machine gun qualification aboard the aircraft carrier USS Enterprise, March 18, 2011. (U.S. Navy photo by Aviation Ordnanceman Airman Alex Metzger)

A U.S. Navy EA-18G Growler takes off from Aviano Air Base, Italy, to support the initial phase of Operation Odyssey Dawn, March 20, 2011. (U.S. Air Force photo by Staff Sgt. Nadine Y. Barclay)

U.S. Navy sailors and members of the Applied Physics Laboratory Ice Station clear ice from the hatch of the USS Connecticut (SSN 22) as it surfaces above the ice in the Arctic Ocean, March 19, 2011. (DoD photo by Petty Officer 2nd Class …

An AV-8B Harrier jump jet returns to the USS Kearsarge for fuel and ammunition resupply in support of Joint Task Force Odyssey Dawn, March 20, 2011. (Marine Corps photo by Lance Cpl. Michael S. Lockett)

As seen through night-vision lenses aboard the USS Ponce, the USS Barry fires Tomahawk cruise missiles to support Operation Odyssey Dawn in the Mediterrean Sea, March 19, 2011. (U.S. Navy photo by Petty Officer 1st Class Nathanael Miller)

A sailor fires a line from the USS John S. McCain to the USNS Bridge during a refueling at sea, March 15, 2011. (U.S. Navy photo by Mass Communication Specialist 1st Class Talley Reeve)

Sailors aboard the USS Blue Ridge move pallets of humanitarian assistance/disaster relief kits during an underway replenishment in the South China Sea, March 12, 2011. (DoD photo by Petty Officer 3rd Class Fidel C. Hart, U.S. Navy)

U.S. Navy sailors help a Misawa city employee transport salvageable fishing equipment at the fishing port in Misawa, Japan, March 15, 2011. (U.S. Navy photo by Petty Officer 2nd Class Devon Dow)

A U.S. Marine drinks from a canteen attached to his XM50 joint-service general-purpose mask in a tear-gas filled chamber on Camp Pendleton, Calif., March 10, 2011. (U.S. Marine Corps photo by Gunnery Sgt. Scott Dunn)

A U.S. Marine takes a leap from a CH-53E Super Stallion over Marine Corps Base Camp Pendleton, Calif., March 9, 2011. (U.S. Marine Corps photo by Lance Cpl. Lisa Tourtelot)

A U.S. soldier hands out wooden toys to village children in Paktika province, Afghanistan, March 9, 2011. (U.S. Army photo by Staff Sgt. Anna Rutherford)

A U.S. Army soldier and Pronto, his Special Forces military working dog, jump off the ramp of a CH-47 helicopter during water training over the Gulf of Mexico, March 1, 2011. (U.S. Air Force photo by Tech. Sgt. Manuel J. Martinez)

A U.S. Airman carries his military dog over his shoulder during an exercise at Hill Air Force Base, Utah, March 4, 2011. (U.S. Air Force photo by Airman 1st Class Allen Stokes)

A U.S. Army soldier jumps across a creek while finding points on a night land-navigation course on Fort Bragg, N.C., March 3, 2011. (U.S. Army photo by Sgt. Michael J. MacLeod)

A U.S. sailor fires a .50-caliber machine gun during a gunnery exercise in the Arabian Sea, March 2, 2011, aboard the USS Carl Vinson. (U.S. Navy photo by Seaman Nicolas C. Lopez)

U.S. Coast Guardsmen conduct a fast rope exercise on the flight deck of the guided-missile destroyer USS Mitscher in the Atlantic Ocean, Feb. 22, 2011. (U.S. Navy photo by Seaman Deven B. King)

A U.S. Special Forces intelligence sergeant climbs over the ruins of an abandoned compound during a security patrol in Panjwai District, Kandahar province, Afghanistan, Feb. 20, 2011. (U.S. Army photo by Sgt. Ben Watson)

Marines conduct routine maintenance on helicopters aboard the amphibious assault ship USS Boxer, underway in the Pacific Ocean, Feb. 24, 2011. (U.S. Navy photo by Petty Officer 3rd Class Trevor Welsh)

A U.S. Army Ranger candidate participates in bridge and vertical haul line exercises at Camp Merrill, Dahlonega, Ga., Feb. 21, 2011. (U.S. Army photo by John D. Helms)

U.S. Marines provide security during a patrol in the Sangin district of Helmand province, Afghanistan, Jan. 25, 2011. (DoD photo by Lance Cpl. Dexter S. Saulisbury, U.S. Marine Corps)
 

U.S. Army soldiers show Afghan soldiers how to secure a room during urban terrain training on Camp Zafar in Afghanistan's Herat province, Feb. 21, 2011. (U.S. Navy photo by Petty Officer 1st Class Stephen Hickok)

Sailors aboard the aircraft carrier USS George H.W. Bush participate in a scrubbing exercise on the ship's flight deck, Feb. 22, 2011. (DoD photo by Petty Officer 3rd Class Kevin J. Steinberg, U.S. Navy)

An artillery round exits the barrel of an M777A2 155mm Howitzer during a live fire exercise at the National Training Center on Fort Irwin Calif., Feb. 19, 2011. (U.S. Army photo by Spc. Michael Blalack)

MH-60 Sea Hawk helicopters deliver stores to the aircraft carrier USS Carl Vinson during a replenishment at sea in the Arabian Sea, Feb. 17, 2011. (U.S. Navy photo by Petty Officer 2nd Class James R. Evans)

U.S. Army soldiers launch a mine-clearing line charge from a vehicle near route Dodge in Paktika province, Afghanistan, Feb. 10, 2011. (U.S. Army photo by Spc. Zachary Burke)

U.S. Army paratroopers move through heavy rain during a 12-mile ruck march, the final event of a week of testing, on Fort Bragg. N.C., Feb. 4, 2011. (U.S. Army photo by Sgt. Michael J. MacLeod)

U.S. Army soldiers fire a 105 mm round from an M119 Howitzer during Operation Diamond Freeze, a combined forces, live-fire training exercise on Fort Sill, Okla., Jan. 29, 2011. (U.S. Army photo by Staff Sgt. William Sallette)

A U.S. Army soldier swings a red chemical light to rally fellow artillerymen during training to prepare for a large airborne exercise at night on Fort Bragg, N.C., Feb, 10, 2011. (U.S. Army photo by Sgt. Michael J. MacLeod)

U.S. Army soldiers air assault from a CH-47 Chinook helicopter into a village inside Jowlzak valley in Afghanistan's Parwan province, Feb. 3, 2011. (U.S. Army photo by Spc. Scott Davis)

U.S. Air Force aircrew members receive instruction on the use of a 20-person life raft during training at the Cobb Aquatic Center in Marietta, Ga., Feb. 4, 2011. (U.S. Air Force photo by Brad Fallin)

U.S. Army paratroopers sling load an M119A2 105 mm howitzer to a UH-60M Black Hawk helicopter during air assault training at Fort Bragg, N.C., Feb. 2, 2011. ( DoD photo by Michael J. MacLeod, U.S. Army)

A U.S. Army soldier pulls security for patrolling soldiers from a cliff, which overlooks the Arghandab River valley in Kandahar province, Afghanistan, Jan. 31, 2011. (U.S. Army photo by Spc. Breanne Pye)

A U.S. Navy sailor stands on the fantail of the USS Carl Vinson as bioluminescent organisms and aircraft on final approach light the night in the Arabian Sea, Feb. 2, 2011. (U.S. Navy photo by Petty Officer 2nd Class James R. Evans)

U.S. Army soldiers in four-wheel vehicles wait as bundles of fuel are air delivered to Forward Operating Base Waza K'wah in Paktika province, Afghanistan, Jan. 30, 2011. (US Army photo)

Missouri Guardsmen respond to a large winter storm that covered most of their state, including Joplin, Feb. 2, 2011. (U.S. Army photo by Sgt. 1st Class Craig Collins)

U.S. Army soldiers conduct squad training after unloading from a UH-60 Black Hawk helicopter on Joint Base Elmendorf-Richardson, Alaska, Jan. 26, 2011. (U.S. Army photo by Staff Sgt. Jason Epperson)

U.S. Air Force pararescuemen and Navy SEALs leap from the ramp of an Air Force C-17 transport aircraft during free-fall parachute training over Marine Corps Base Hawaii, Jan. 21, 2011. (U.S. Marine Corps photo by Lance Cpl. Reece E. Lodder)

A U.S. Navy sailor signals Marines driving amphibious assault vehicles during recovery operations aboard the USS Denver, in Okinawa, Japan, Jan. 28, 2011. (U.S. Navy photo by Seaman Paul Kelly)

Security forces Airmen advance toward a door during a training exercise Jan. 24, 2011, at Minot Air Force Base, N.D. (U.S. Air Force photo/Senior Airman Michael J. Veloz)

Sailors from the surface contact attack team conduct a gun exercise with a .50-caliber machine gun aboard the USS Mitscher, Jan. 24, 2011.  (U.S. Navy photo by Mass Communication Specialist Seaman Deven B. King)

U.S. Marines blend in with their surroundings during hydrographic reconnaissance training at Marine Corps Training Area Bellows in Waimanalo, Hawaii, Jan. 13, 2011. (U.S. Marine Corps photo by Lance Cpl. Reece E. Lodder)

The aircraft carrier USS Enterprise leads the ships of the Enterprise Carrier Strike Group, the guided-missile cruiser USS Leyte Gulf, the guided-missile destroyers USS Bulkeley, USS Barry and USS Mason underway in the Atlantic Ocean, Jan.…

A Raven, an unmanned aerial vehicle, is launched during a demo for Army Chief of Staff Gen. George W. Casey Jr. at the National Training Center on Fort Irwin, Calif., Jan. 22, 2011. (U.S. Army photo by D. Myles Cullen)

Two Coast Guard 47-foot lifeboat crews maneuver in the surf during a class at Umpqua River near Winchester Bay, Ore., Jan. 18, 2011. (U.S. Coast Guard photo by Petty Officer 1st Class Shawn Eggert)

A U.S. Navy sailor reports a class Alpha fire during a firefighting drill aboard the USS Gridley in the Pacific Ocean, Jan. 17, 2011. (U.S. Navy photo by Mass Communication Specialist 3rd Class Travis K. Mendoza)

A U.S. Army soldier assesses a well during a trip to a village near Shahr-e Safa, Afghanistan, Jan. 19, 2011. (U.S. Air Force photo by Staff Sgt. Brian Ferguson)

U.S. Marines execute squad push-ups during training aboard the USS Gunston Hall in the Southern Command area of responsibility, Jan. 17, 2011. (U.S. Marine Corps photo by Cpl. Jacqueline Sanderfer)

A U.S. Marine carefully steps across an open causeway to cross a canal during Operation Integrity, in Marjah, Helmand province, Afghanistan, Jan. 15, 2011. (ISAF photo)

Members of the U.S. Air Force's 36th Contingency Response Group conduct static line jump training from a C-17 Globemaster III over Andersen Air Force Base, Guam, Jan. 11, 2011. (U.S. Air Force photo by Staff Sgt. Mike Meares)

U.S. Army soldiers sit on sandbags in the Daymirdad district of Wardak province, Afghanistan, Jan. 9, 2011. (U.S. Army photo by Sgt. Sean P. Casey)

U.S. Navy Seaman Jeremy Stokes paints the sign for the Seabee compound on a bulldozer blade in Guantanamo Bay, Cuba, Jan. 11, 2010. (U.S. Navy photo by Seaman Lori Roberts)

U.S. Army soldiers take cover as they receive fire on a riverbed near Combat Outpost Delorean in Bala Murghab in Afghanistan's Baghdis province, Jan. 9, 2011. (U.S. Air Force photo by Tech. Sgt. Kevin Wallace)

U.S. Defense Secretary Robert M. Gates reviews the People's LIberation Army Honor Guard as part of an arrival ceremony to the Bayi building in Beijing, Jan. 10, 2011. (DOD photo by U.S. Air Force Master Sgt. Jerry Morrison)

U.S. troops retrive cargo dropped from a U.S. Air Force C-17 Globemaster III near Forward Operating Base Todd in Afghanistan's Baghdis province, Jan. 6, 2011. (U.S. Air Force photo by Tech. Sgt. Kevin Wallace)

A U.S. Navy Seaman adjusts a set of night-vision goggles inside an intermediate maintenance shop aboard the aircraft carrier USS Carl Vinson in the Pacific Ocean, Jan. 6, 2011. (U.S. Navy photo by Petty Officer 3rd Class Travis K. Mendoza)

U.S. Army soldiers and Marines walk through helicopter rotor washas they move toward a Forward Operating Base in Darrah-I-Bum, Badghis province, Afghanistan, Jan. 5, 2011. (U.S. Marine photo by Sgt. Brian Kester)

A U.S. Air Force C-130J Hercules crew flies to a drop zone during a mission over Afghanistan, Dec. 29, 2010. (U.S. Air Force photo by Staff Sgt. Eric Harris)

U.S. Marines and sailors eat a New Year’s lunch with the Younis family in the village of Bareckzai, Afghanistan, Jan. 1, 2011. (U.S. Marine Corps photo by Lance Cpl. Glen Santy)

A U.S. Airman scans his sector during a mission in support of Operation Enduring Freedom aboard an HH-60 Pave Hawk helicopter near Kandahar, Afghanistan, Dec. 24, 2010. (U.S. Air Force photo by Staff Sgt. Eric Harris)

A U.S. Marine speaks with an Afghan boy while providing security during an inspection of a new school being built in Ghartallah, Musa Qal’eh district, Afghanistan, Dec. 24, 2010. (U.S. Marine Corps photo by Lance Cpl. Joshua J. Hines)

U.S. Coast Guard Cutters Biscayne Bay, bottom, and Mackinaw, top, break ice in the lower end of the Rock Cut in the St. Marys River in Mich., Dec. 22, 2010. (U.S. Coast Guard photo by Chief Petty Officer David Rauch)

A U.S. military convoy enters the village of Shinkay, Qalat, Afghanistan, Dec. 21, 2010. (U.S. Air Force photo by Staff Sgt. Brian Ferguson)

A U.S. Air Force F-15E Strike Eagle aircraft releases flares during a training mission over North Carolina, Dec. 17, 2010. (U.S. Air Force photo by Staff Sgt. Michael B. Keller)

Friends and family members greet pilots from Strike Fighter Squadron 32 during a homecoming ceremony Dec. 18, 2010, at Naval Air Station Oceana. (U.S. Navy photo by Petty Officer 3rd Class Indra Bosko)

A Navy SEAL climbs into the turret gunner position during a mobility training exercise through a simulated city, on San Clemente Island, Calif., Dec. 10, 2010. (U.S. Navy photo by Petty Officer 2nd Class Eddie Harrison)

A U.S. Air Force F-15E Strike Eagle aircraft prepares to land after a training mission at Seymour Johnson Air Force Base, N.C., Dec. 15, 2010. (U.S. Air Force photo by Staff Sgt. Michael B. Kelle)

A U.S. Army soldier uses a footbridge to cross a river during a mission to Khwazi village, Afghanistan, Dec. 14, 2010. (U.S. Air Force photo by Staff Sgt. Brian Ferguson)

A U.S. Navy sailor guides an F/A-18C Hornet onto a steam-powered catapult at dusk on the flight deck of the aircraft carrier USS Carl Vinson in the Pacific Ocean, Dec. 15, 2010. (U.S. Navy photo by Petty Officer 2nd Class James R. Evans)

A U.S. Army soldier provides overwatch security for fellow troops patrolling the Dandarh village in Parwan province, Afghanistan, Dec. 9, 2010. (U.S. Army photo by Spc Kristina Gupton)

One U.S. Army soldier takes cover while another fires mortars from a mountain top overlooking the Ganjgal Valley in eastern Afghanistan’s Kunar Province, Dec. 11, 2010. (U.S. Army photo by Staff Sgt. Mark Burrell)

U.S. Marines wait in their vehicles as a charge detonates on route 611 during a mine-clearing operation in the Sangin district in Afghanistan's Helmand province, Dec. 4, 2010. (U.S. Marine Corps photo by Cpl. John M. McCall)

A U.S. Marine observes as explosive ordnance disposal team members gently place unexploded ordnance in line to be destroyed at Cigini, Afghanistan, Dec. 10, 2010. (U.S. Marine Corps photo by Cpl. Megan Sindelar)

Naval Submarine School Senior Instructors discuss with contractors the scheduled maintenance of the school's 84,000-gallon capacity escape trunk in the submarine escape trainer in Groton, Conn., Dec. 7, 2010. (U.S. Navy photo by William …

Sailors wear mask leak testers to check the integrity of their newly issued gas masks aboard the aircraft carrier USS Ronald Reagan, Dec. 8, 2010. (U.S. Navy photo by Seaman Benjamin Jernigan)

Forty bundles of fuel fall from a U.S. Air Force Globemaster III aircraft over Afghanistan, Dec. 8, 2010. (U.S. Air Force photo by Staff Sgt. Andy M. Kin)

A U.S. Airman lowers a stokes down into the waiting hands of pararescuemen during Keen Sword, an exercise on Kadena Air Base, Okinawa, Dec. 6, 2010. (U.S. Air Force photo by Staff Sgt. Lakisha A. Croley)

A U.S. Army soldier walks through a field to the village of Dahanah in Wardak province, Afghanistan, Dec. 2, 2010. (U.S. Army photo by Sgt. Sean Patrick Casey)

Marine Corps officer candidates battle the waste-deep, bitter-cold water of Big Ford during the log drill race on morning of Dec. 2, 1010, at Marine Corps Base Quantico, Va. (U.S. Marine Corps photo by Sgt. Michael S. Cifuentes)

A U.S. Marine plays with children as they wait to be seen at a village medical outreach in Boldak, Afghanistan, Nov. 22, 2010. (U.S. Marine Corps photo by Lance Cpl. Marionne T. Mangrum)