To accommodate the increased weight in the hold necessitated by the tanks, the cabin floor and side brackets must be reinforced. PATS has about 1,400 installed tanks in its logbook. Most are in 737 BBJs, but it has done work for the Air Force, Army, Bombardier and Fokker. DeCrane's ODA (organization delegation authority) allows the company to perform modifications in the field. Teams have been sent to Basel, Switzerland, and Shannon, Ireland, to install tanks. PATS operates within the Philadelphia FSDO, and John agreed that "they're good. We have a great relationship."