UNDERWATER TRAINING Soldiers, including National Guard combat divers, train at the Army Special Forces Underwater Operations School in Key West, Fla. Certified combat divers refreshed their skills while others prepared to attend the Army's combat diver school. The soldiers are assigned to the National Guard's 3rd Battalion, 20th Special Forces Group. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 795418-J-VSE49-018.jpg Photo Gallery