INDIANAPOLIS (WISH) — The local head of the Transportation Security Administration union on Monday said more staff departures are possible if the Department of Homeland Security shutdown continues.

Kevin Smith, the president of American Federation of Government Employees Local 618, which represents TSA agents at Indianapolis International Airport, said his team has not lost any additional personnel beyond the roughly half-dozen departures he reported last week, but there were times last week when as many as half a dozen more agents called out sick. He said that’s double or triple the number who are normally out at any time. He said he suspects that’s due to agents trying to save up money to pay for gas so they can come to work.