b. Emergency Resupply Plan. This plan provides for emergency replacement of supplies and equipment essential to individual survival, communications, and combat throughout the time that the detachment is in the operational area. 1. Preinfiltration planning includes: provisional DZ selection to be confirmed after infiltration, DZ markings, drop date and time based upon the emergency, and supplies to be dropped. 2. After infiltration is completed and communications established with the SFOB, the emergency DZ location (which is known only to the special forces detachment members) is either confirmed or a new location is designated. 3. The preplanned emergency resupply drop is normally executed after the detachment misses a specified, consecutive number of scheduled communications contacts.