I'm not sure some aspects of the TSA need to be replaced --that is, they should just be eliminated. Airline executives in the UK are starting to grumble as well. As this quote from Ryanair CEO Michael O’Leary shows.

“I’ll never cease to be amazed at the extent to which bureaucrats can invent more procedures that do nothing for safety except give people the impression that they’ve done something,” O’Leary said in an interview. “We’ve got to stop this nonsense of taking people’s shoes and water off them.”

He's right on the nose.