U.S. Army Staff Sgt. Bryan Mills, an infantry squad leader assigned to the Kronos Troop, 3rd Squadron, 2d Cavalry Regiment, conducts a M4 rifle weapon qualification training in support of NATO's enhanced Forward Presence Battle Group Poland in Bemowo Piskie, Poland, Jan. 28, 2020. NATO’s enhanced Forward Presence consists of four battalion-sized battle groups deploying on a persistent rotational basis to Estonia, Latvia, Lithuania and Poland to demonstrate the alliance’s determination and ability to act as one in response to any aggression against its members.