One of the least popular pieces of security equipment since the Sept. 11 terrorist attacks is now part of the Smithsonian's collection at the National Museum of American History _ a metal detector from the Transportation Security Administration.
On Thursday, the TSA donated the metal detector, along with a training figure used by air marshals and a shirt from the first official screener uniform.
The objects are among more than 50 items from New York City, the Pentagon and Shanksville, Pa., that go on view Saturday. They are part of a special exhibit, "September 11: Remembrance and Reflection."
Other objects on view will be airplane fragments, a door from a crushed fire truck and a flight attendant's handbook from Flight 93.