Team Sheppard: A week in photos

Airmen Michael Alejo, Dyllan Galloway and Jacob Ramirez, 363rd Training Squadron F-15 Eagle aircraft armament systems apprentice students, learn how to apply and remove external electrical power to and from the aircraft, March 2, 2017. This is the first step in learning to perform operations check on the weapons systems of the F-15 Eagle aircraft. (U.S. Air Force photo by Liz H. Colunga/Released)

Airmen Michael Alejo, Dyllan Galloway and Jacob Ramirez, 363rd Training Squadron F-15 Eagle aircraft armament systems apprentice students, learn how to apply and remove external electrical power to and from the aircraft, March 2, 2017. This is the first step in learning to perform operations check on the weapons systems of the F-15 Eagle aircraft. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman 1st Class John Yang, 363rd Training Squadron aircraft armament student, attaches the cool air hose to an F-15 Eagle aircraft. To run external electronics, cool air is required. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman 1st Class John Yang, 363rd Training Squadron aircraft armament student, attaches the cool air hose to an F-15 Eagle aircraft. To run external electronics, cool air is required. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman Jacob Rebolloso, 362nd Training Squadron F-22 Raptor crew chief student, operates a portable maintenance aid, to connect and apply aircraft power. The students in this course are taught with hands-on techniques they are then able to apply to an $8 million F-22 Raptor trainer. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman Jacob Rebolloso, 362nd Training Squadron F-22 Raptor crew chief student, operates a portable maintenance aid, to connect and apply aircraft power. The students in this course are taught with hands-on techniques they are then able to apply to an $8 million F-22 Raptor trainer. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman 1st Class Joseph Limoli, 363rd Training Squadron F-15 Eagle armament student, safety wires the bolts on an ADU-552 missile launcher adapter. The wire is an extra safety measure that ensures the bolt doesn’t loosen up and fall out in flight. (U.S. Air Force photo by Liz H. Colunga/Released)

Airman 1st Class Joseph Limoli, 363rd Training Squadron F-15 Eagle armament student, safety wires the bolts on an ADU-552 missile launcher adapter. The wire is an extra safety measure that ensures the bolt doesn’t loosen up and fall out in flight. (U.S. Air Force photo by Liz H. Colunga/Released)

SHEPPARD AIR FORCE BASE, Texas -- Airmen Michael Alejo, Dyllan Galloway and Jacob Ramirez, 363rd Training Squadron F-15 Eagle aircraft armament systems apprentice students, learn how to apply and remove external electrical power to and from the aircraft, March 2, 2017. This is the first step in learning to perform operations check on the weapons systems of the F-15 Eagle aircraft. (U.S. Air Force photo by Liz H. Colunga/Released)