NASHVILLE, Tenn. (AP) -- A former federal air marshal has pleaded no contest to unlawful photography after being accused of taking photos underneath women's skirts as they boarded a plane at Nashville International Airport. The Tennessean reports that 29-year-old Adam Bartsch had been facing a count of disorderly conduct for the Oct. 17 incident on Southwest Airlines Flight 3132, but the charge was upgraded. During Thursday's court hearing, a judge sentenced him to probation for 11 months and 29 days. If he stays out of trouble, he will be able to have the charge expunged. Bartsch's attorney, David Ridings, says his client made a mistake and is "very remorseful." The Transportation Security Administration says Bartsch is no longer an employee with the air marshal program.