Marine Demonstration As U.S. Marines look on, Colombian Marine Lt. Col. Eduar Alexander Michaels Bravo, deputy commander of Special Purpose Marine Air-Ground Task Force Southern Command, demonstrates a lightweight water purification system during a joint humanitarian assistance and disaster relief rehearsal in Covenas, Colombia, Oct. 2, 2019. SHARE IMAGE: Download Image: Full Size (3.75 MB) Tags: Marine Corps Photo By: Marine Corps Sgt. Stanley Moy VIRIN: 191002-M-BG142-097.JPG Photo Gallery