UPON YOUR ARRIVAL to Osan Air Base, you will need to attend mandatory in-processing at the Mustang (Bldg 1313) within 24 hours of arrival. In-processing is held Monday-Friday from 7:30 a.m. to noon. You must also visit the 51st Security Forces Squadron Pass and Registration section which is located in Building 765, to get registered in the DBIDS system. Registration in the DBIDS system is mandatory and must be completed within 72 hours of arrival on station.
In-processing during local exercises
Duty uniforms for Osan AB personnel is ABUs or flight suits. Upon arrival you must also have one complete service dress uniform. If you arrive during an exercise or if you are within your first five days on station, then you are considered a non-participant. Non-participants wear blue service uniforms and carry a copy of their PCS orders. This procedure also applies during out-processing at the end of your tour. Also, as part of inprocessing, you will go to BEPO training, if there is an exercise going on, then you will bring your ABUs to change into during the training.
Any questions or concerns you may have should be routed through your sponsor.