Latest investigation results were not disclosed, but it sounds like a rehash of 2015:

In 2015, the then-acting head of the TSA, Melvin Carraway, was reassigned after an internal investigation by the Department of Homeland Security found sceening failures at dozens of the nation’s busiest airports.

Screeners did not to detect 95 percent of test items in that investigation. The breaches allowed undercover investigators to smuggle weapons, fake explosives and other contraband through numerous checkpoints.

TSA remains a joke of a program, wasting billions of dollars and countless hours annually.