Image 0 of 7Two U.S. Air Force HH-60 Pave Hawk helicopters from the 301st Rescue Squadron, Patrick Air Force Base, Florida, performs maneuvers during a training scenario supporting pararescuemen at Guardian Centers, Perry, Georgia, October 11, 2017. (Master Sgt. Stephen D. Schester/Air Force) Sailors from the Naval Health Clinic and Marines from Marine Aerial Refueler Transport Squadron 252 battle it out in one of the early contests during the 2017 Combined Federal Campaign Tug-of-War Tournament at Marine Corps Air Station Cherry Point, N.C., Oct. 13, 2017. (Cpl. Jason Jimenez/Marine Corps) A U.S. Air Force F-22 Raptor from the Air Combat Command F-22 Raptor Demonstration Team takes off during the Seoul International Aerospace and Defense Exhibition (ADEX) 2017 press day at the Seoul Airport, Republic of Korea, Oct. 16, 2017. The (Staff Sgt. Alex Fox Echols III/Air Force) Army 1st Lt. Gerard Holodak, assigned to the 109th Transportation Company, 17th Combat Sustainment Support Battalion, U.S. Army Alaska, fires the M136E1 AT4-CS confined space light anti-armor weapon at Joint Base Elmendorf-Richardson. (Staff Sgt. Westin Warburton/Army) The California National Guard's Adjutant General Maj. Gen. David S. Baldwin joined Gov. Jerry Brown, U.S. Sen. Diane Feinstein, and U.S. Sen. Kamala Harris for an air and ground survey of Northern California fires in and around Santa Rosa, California, Oct. 14, 2017. (Capt. Will Martin/Army National Guard) Information Systems Technician 2nd Class Philmore Daley, from Lemoore, Calif., plays cornhole during a steel beach picnic on the flight deck of the Ticonderoga-class guided-missile cruiser USS Princeton (CG 59), Oct. 15, 2017. (Mass Communication Specialist 3rd Class Kelsey J. Hockenberger/Navy) The Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) fires a standard missile 3 during exercise Formidable Shield 2017. (Mass Communication Specialist 1st Class Theron J. Godbold)