Late night hosts have had a field day joking about the new TSA pat down procedures and body scanners, but despite all the heat the agency’s been taking, they’re now offering musical entertainment as well. The LAX TSA Choir is a group of 17 singers and musicians, all of them officers of the Transportation Security Administration, and have been surprising passengers with performances of holiday music and other tunes in the midst of one of the nation's busiest airports. The LAX choir is one of just two — the other is at the airport in Austin — made up entirely of TSA workers, according to TSA spokesman Greg Soule.