A sign on one of the buildings in the background as Anderson and Percell walk by says "Keep Tan Son Nhut Clean," but the venue of the base had shifted from Tan Son Nhut to Camp Barnett several episodes before.
The clocks in the rec phone room show either a 4 to 6 hour, or a 16 to 18 hour difference between Vietnam and the States. In truth, there is only a 10 to 13 hour time difference.