Comedians Rob Maher and Tommy Davidson pose for pictures after their show on Bagram Airfield, Afghanistan, Dec. 31, 2013. The two performed a comedy routine for service members on New Year's Eve. U.S. Air Force photo by Senior Master Sgt. Gary J. Rihn

A UH-60 Medevac Black Hawk helicopter lands on the USS Harper's Ferry during a deck-landing qualification in the Arabian Gulf, Dec. 26, 2013. U.S. Army and U.S. Navy conduct near-shore training missions to build familiarity with each other's equipment and procedures. The 42nd Combat Aviation Brigade, New York Army National Guard, operates rotary winged aircraft throughout the region to support Operation Enduring Freedom. U.S. Army National Guard photo by Spc. Harley Jelis

A U.S. Special Forces Operation Detachment Alpha soldier scans the area as Afghan national commandos conduct a clearing operation in Mandozai village in the Maiwand district in Afghanistan's Kandahar province, Dec. 27, 2013. U.S. soldiers assisted Afghan commandos during the operation. U.S. Army photo by Staff Sgt. Bertha A. Flores

A U.S. airman clears a few inches of snow off an F-16 Fighting Falcon during the winter's first snowfall on Bagram Airfield, Afghanistan, Dec. 29, 2013. U.S. Air Force photo by Capt. Brian Wagner

The 2014 U.S. Army All-American Bowl West Team's offensive line practices making a hole for the running back at the Blossom Athletic Center in San Antonio, Dec. 30, 2013. Perfecting this offensive play will allow the running game to be a threat to the East Team's defense on game day, Jan. 4, 2014. U.S. Army Reserve photo by Spc. Stephanie Ybarra

Navy Midshipmen run onto the field to start the 2013 Bell Helicopter Armed Forces Bowl in Fort Worth, Texas, Dec. 30, 2013. Navy played Middle Tennessee and won 24-6. U.S. Coast Guard photo by Petty Officer 1st Class Andrew Kendrick

U.S. airmen clear snow near an F-16 Fighting Falcon on Bagram Airfield, Afghanistan, during a snowstorm, Dec. 29, 2013. Total accumulation was about 3 inches in the first significant snowfall of the season. U.S. Air Force photo by Capt. Brian Wagner

U.S. Navy Petty Officer 2nd Class Cory Reed conducts a counter measure wash-down test on the forecastle aboard the guided-missile cruiser USS Monterey, at sea, Dec. 28, 2013. The Monterey is scheduled to return to homeport in Norfolk, Va., after a nine-month deployment to the U.S. 5th and 6th Fleet areas of operations. U.S. Navy photo by Petty Officer 2nd Class Billy Ho