An F-35A Lightning II awaits permission to taxi May 30, 2018, at Eglin Air Force Base, Fla. The 33 FW conducted F-35A night flying operations May 29-31, 2018, satisfying a training requirement for student pilots who will routinely fly day and night operations upon entering the combat Air Force. During this iteration of the pilot training syllabus, the night flying portion was stretched later into evening hours than in the past, allowing for more qualifications to be checked off across fewer days. (U.S. Air Force photo by Airman 1st Class Emily Smallwood)

U.S. Air Force Lt. Col. Erik Axt, 33rd Fighter Wing director of staff, right, and Major James Russell, 466th Fighter Squadron chief of training, left, walk toward an F-35A Lightning II May 30, 2018, at Eglin Air Force Base, Fla. The 33 FW conducted F-35A night flying operations May 29-31, 2018, satisfying a training requirement for student pilots who will routinely fly day and night operations upon entering the combat Air Force. During this iteration of the pilot training syllabus, the night flying portion was stretched later into evening hours than in the past, allowing for more qualifications to be checked off across fewer days. (U.S. Air Force photo by Airman 1st Class Emily Smallwood)

U.S. Air Force Senior Airman Daniel Portilla-Romero, 33rd Aircraft Maintenance Squadron crew chief, stands near an F-35A Lightning II as they await permission to taxi May 30, 2018, at Eglin Air Force Base, Fla. The 33 FW conducted F-35A night flying operations May 29-31, 2018, satisfying a training requirement for student pilots who will routinely fly day and night operations upon entering the combat Air Force. During this iteration of the pilot training syllabus, the night flying portion was stretched later into evening hours than in the past, allowing for more qualifications to be checked off across fewer days. (U.S. Air Force photo by Staff Sgt. Peter Thompson)

An F-35A Lightning II assigned to the 33rd Fighter Wing awaits permission to taxi May 30, 2018, at Eglin Air Force Base, Fla. The 33 FW conducted F-35A night flying operations May 29-31, 2018, satisfying a training requirement for student pilots who will routinely fly day and night operations upon entering the combat Air Force. During this iteration of the pilot training syllabus, the night flying portion was stretched later into evening hours than in the past, allowing for more qualifications to be checked off across fewer days. (U.S. Air Force photo by Staff Sgt. Peter Thompson)

U.S. Air Force Senior Airman Jared Ray, 33rd Aircraft Maintenance Squadron crew chief, marshals an F-35A Lightning II May 30, 2018, at Eglin Air Force Base, Fla. The 33 FW conducted F-35A night flying operations May 29-31, 2018, satisfying a training requirement for student pilots who will routinely fly day and night operations upon entering the combat Air Force. During this iteration of the pilot training syllabus, the night flying portion was stretched later into evening hours than in the past, allowing for more qualifications to be checked off across fewer days. (U.S. Air Force photo by Staff Sgt. Peter Thompson)