PREL trains for GSC

The 91 Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team works behind a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. The three-member PREL team is responsible for the inspection and maintenance of the payload transport trailer’s electrical systems and environmental climate control. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

The 91 Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team works behind a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. The three-member PREL team is responsible for the inspection and maintenance of the payload transport trailer’s electrical systems and environmental climate control. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Members of the 91st Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team, disassemble electrical cables at Minot Air Force Base, N.D., May 30, 2017. Berthiaume helps prepare the team for Global Strike Challenge by simulating maintenance troubleshooting scenarios. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Members of the 91st Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team, disassemble electrical cables at Minot Air Force Base, N.D., May 30, 2017. Berthiaume helps prepare the team for Global Strike Challenge by simulating maintenance troubleshooting scenarios. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Staff Sgt. Jami Escobar, 91st Maintenance Group power, refrigeration, electrical, laboratory technician, inspects a payload transport electrical cable during training for Global Strike Challenge at Minot Air Force Base, N.D., May 31, 2017. Escobar is responsible for guiding the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Staff Sgt. Jami Escobar, 91st Maintenance Group power, refrigeration, electrical, laboratory technician, inspects a payload transport electrical cable during training for Global Strike Challenge at Minot Air Force Base, N.D., May 31, 2017. Escobar is responsible for guiding the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Tech. Sgt. Carl Snedeker, 91st Maintenance Group facility maintenance section site supervisor, runs through a checklist during Global Strike Challenge training at Minot Air Force Base, N.D., May 31, 2017. Snedeker is an alternate technician for the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Tech. Sgt. Carl Snedeker, 91st Maintenance Group facility maintenance section site supervisor, runs through a checklist during Global Strike Challenge training at Minot Air Force Base, N.D., May 31, 2017. Snedeker is an alternate technician for the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Tech. Sgt. Carl Snedeker, 91st Maintenance Group facility maintenance section site supervisor, inspects a payload transport trailer’s lights during Global Strike Challenge training at Minot Air Force Base, N.D., May 31, 2017. Snedeker is an alternate technician for the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Tech. Sgt. Carl Snedeker, 91st Maintenance Group facility maintenance section site supervisor, inspects a payload transport trailer’s lights during Global Strike Challenge training at Minot Air Force Base, N.D., May 31, 2017. Snedeker is an alternate technician for the three-member PREL crew for GSC 17. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Staff Sgt. Jami Escobar, 91st Maintenance Group power, refrigeration, electrical, laboratory technician, monitors voltage inside a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. Escobar is responsible for guiding the three-member PREL crew during Global Strike Challenge. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

Staff Sgt. Jami Escobar, 91st Maintenance Group power, refrigeration, electrical, laboratory technician, monitors voltage inside a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. Escobar is responsible for guiding the three-member PREL crew during Global Strike Challenge. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

The 91 Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team works inside a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. The three-member PREL team is responsible for the inspection and maintenance of the payload transport trailer’s electrical systems and environmental climate control. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

The 91 Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team works inside a payload transport trailer at Minot Air Force Base, N.D., May 31, 2017. The three-member PREL team is responsible for the inspection and maintenance of the payload transport trailer’s electrical systems and environmental climate control. (U.S. Air Force photo/Senior Airman J.T. Armstrong)

MINOT AIR FORCE BASE, N.D. -- The 91st Maintenance Group power, refrigeration, electrical, laboratory Global Strike Challenge team trains for GSC 17 at Minot Air Force Base, N.D., May 30, 2017. The three-member PREL team is responsible for the inspection and maintenance of the payload transport trailer’s electrical systems and environmental climate control. (U.S. Air Force photos/Senior Airman J.T. Armstrong)