The hot Texas sun beats through the opening of a sound-suppressing tube as senior engine mechanic Joe Wisdom, in the aircraft, and engine technician Bryant Green get ready to test a T-38C Talon after it underwent engine repairs recently at Sheppard Air Force Base, Texas, July 19, 2018. The facility, called the "Hush House," is able to reduce the roar of the engines inside the building to a murmur on the outside with the use of tube. (U.S. Air Force photo by John Ingle)