Air Force Staff Sgts. Alvin Felder and Andrew Molina ensure a Thunderbirds jet is show-ready on Patrick Air Force Base, Fla., March 13, 2015. Felder is a tactical aircraft maintenance specialist and Molina is an aircraft structural maintenance specialist assigned to the Air Force Thunderbirds air demonstration team. Air Force Staff Sgts. Alvin Felder and Andrew Molina ensure a Thunderbirds jet is show-ready on Patrick Air Force Base, Fla., March 13, 2015. Felder is a tactical aircraft maintenance specialist and Molina is an aircraft structural maintenance specialist assigned to the Air Force Thunderbirds air demonstration team. SHARE: Download: Full Size (1.93 MB) Tags: Photo Essays Credit: VIRIN: 619943-J-MLU22-117.jpg Photo Gallery