Norbertine Father Martin Benzoni is a unique Chaplain serving the US military: he isn’t in the military.  He currently serves in El Segundo as the

first ever part-time civilian Catholic chaplain or contractor assigned there. The decision to hire contractors was made at the Pentagon level in order to cover the unique needs in the military…due to a priest shortage the Pentagon decided to sign contracts with the chaplains at all military facilities.

As noted, Benzoni is not the only contract Chaplain.  Interestingly, the contract is between the priest’s religious order and the Air Force.  For those not familiar with military contracting, this means that Benzoni is not even a federal employee.  He could be moved by his Abbot and replaced with another priest; the contract merely requires the order to fulfill the requirement of having a priest there.  In addition, according to the news article he cannot be deployed (though other contractors can be).