The finding also calls into question the effectiveness of the Security Security Administration's clandestine program of placing plainclothes agents on commercial flights to detect and respond to in-flight threats.

The Inspector General said that he "had identified $ 394 million of funds that could be used more effectively."

The ministry's most recent budget documents indicate that the budget for the Federal Air Marshal Service, or FAMS, is about $ 803 million.

The IG made public a memorandum in five sentences revealing a classified review "of the extent to which FAMS can ban an improvised explosive device in flight." We have identified vulnerabilities related to FAMS 'contribution to international flight safety.

"The TSA appreciates the work of the Inspector General's Office," said the agency in a statement. "The Federal Air Marshal Service continues to develop its mission tactics in the face of threats to transportation safety.While we can not comment on the details of the OIG recommendation because of its sensitive nature, the TSA continues to Examine and explore methods and capabilities to further reduce all risks to aviation safety. "

The Inspector General's note did not specify whether the TSA agreed or disagreed with its recommendations. The Office of the Inspector General did not immediately return a request for comment.

With the exception of the summary released Tuesday, the report remains classified.

TSA Administrator David Pekoske has already defended the Air Marshal program, saying it reduces risks to aviation.

"I really think the Air Marshals provide a significant layer of security," he told reporters during a conference call last May. He added that it is difficult "to measure the success of prevention".

The Federal Air Marshals accused of more than 200 accidents with weapons
This is the third review of the Air Marshal program by the IG since the end of 2017, while He concluded that an unidentified part of the program's work can be "interrupted" and that "funds can be used more efficiently".

The summary did not reveal whether the two reports describe the same waste. It also did not explain the vulnerabilities uncovered during the more recent review, nor did it explain how the funds were spent, describing the details as categorized.

After his first report in November 2017, John Roth, then Inspector General told Congress this funding of marshal air "is wasted fighting mainly the last war."
The program has also been undermined by other problems. A CNN report in November revealed more than 200 incidents of air marshals having mishandled their weapons.
And in December, the TSA declared it would be reduced A classified program called Quiet Skies that targeted US citizens who were not on terrorist watch lists or suspected of criminal activity. The program, revealed for the first time by the Boston Globe, involved commissioners responsible for keeping a detailed record of passenger behavior, such as meals and bathroom visits. The TSA stated that screening officers would no longer report to intelligence agencies if the passengers they observed were not doing anything suspicious on a flight.