Federal prosecutors say 34-year-old Andrew Cheever of Lowell was sentenced Wednesday to three years and five months behind bars and two years of probation. He was also ordered to read victim impact statements of six children depicted in the pornography he collected.
He pleaded guilty in December.
Authorities say Cheever had thousands of child pornography images and videos on his home computer and made them available on the Internet using peer-to-peer file sharing software.
Cheever was a security checkpoint screener at Logan International Airport until he was taken into custody in September.
He no longer works for the TSA.