Former Levittown volunteer firefighter Raymond Nicholson gave papers to the department twice that said he'd been called to active duty with the army, prosecutors say.
Those documents that said he had to report to Andrews Airforce Base and the World Trade Center weren't legitimate, officials say.
The Nassau County District Attorney's Office says the active duty order allowed Nicholson, 34, to be exempt from meeting his fire call quota, yet still allowed him to earn time toward his pension.
Prosecutors say the Levittown fire department contacted the army following a routine audit and when the army said that Nicholson had not been called to active duty on the dates he's alleged to have claimed, that's when the Levittown FD filed a complaint.