Air traffic controllers are about to miss their first paycheck. Some are now forced to get a side gig. Four days into the government shutdown, Jack Criss, an air traffic control specialist at Andrews Air Force Base in Maryland, assumed a second role — driving for DoorDash.

Today, however, controllers will receive their first zero-dollar paycheck, or, as Duffy called it, “ a big, fat zero .” No income. Nothing, all while they are working full-time and, more often than not, mandatory overtime.

Jack Criss Jr. said last month when he got off work, he drove for DoorDash just to pay for his daughter’s tuition.