Chinook Bath A U.S. soldier washes a CH-47 Chinook helicopter on Bagram Airfield, Afghanistan, Dec. 29, 2015. The soldier is assigned to the Michigan National Guard's Company B, Headquarters Company, 3rd Battalion, 238th Aviation Regiment, General Support Aviation Brigade. U.S. Army photo by Sgt. 1st Class Nathan Hutchison SHARE: Download: Full Size (0.28 MB) Credit: Sgt. 1st Class Nathan Hutchison VIRIN: 151229-A-LP538-019.JPG Photo Gallery