Level Check Navy Petty Officer 3rd Class Don Davidson, assigned to Naval Mobile Construction Battalion 4, checks to see that a concrete block wall is level at a project at Estrella National High School in the Philippines last year. SHARE IMAGE: Download Image: Full Size (1.52 MB) Photo By: Navy Petty Officer 2nd Class Ji Han VIRIN: 190531-N-QF484-1001A.JPG Photo Gallery