3.1.1.1 To expedite removal from parked aircraft the aircraft should be parked so that access to.wing tips and positioning of removal vehicles can be done without penetrating parking array; i. e. aircraft should be parked in line on taxi-way wing tip to wing tip, if possible, spaced 25 to 50 feet apart; they should not be parked in a three-line box array, for example, 3.1.1.2 Alternative to 3.1.1.1 samples can be removed from airplanes one at a time when they are enroute to farking area towed by tug after crew has been removed, This method was used for F-8)G aircraft in CASTLE: samples were removed near AEC compound at entrance to old drone aircraft parking area, 3.1.2 Personnel, All personnel concerned should wear fatigue type clothing, including cap, high-top heavy field shoes and leather palmed work gloves. Properly executed removal operations should not result in contamination of personnel, 3.1.3 Vehicles and Tools, 3.1.3.1 Truck or tug with two trailers in tandem; shielded box for empty filter holders is placed at front of first trailer next to tug, removal tools and rack placed next to box, tools resting with heads in rack; shielded cave is placed in rear of second trailer with filter paper pig tray toward forward end; plywood liners are placed in cave and calibrated T-1B or AN/PDR-39 is installed in rack under pig tray. Tug and trailers are positioned 25 to 50 feet in front of airplane so that last trailer is in front of airplane, 3.1.3.2 Truck or tug with one trailer; unfilled pigs with boxes are placed to front of and boxes for filled pigs are placed at rear of trailer. Truck and trailer are 222 AFWL/H@ SWEH-2-0034, Ce e °