Breadcrumb Home Army ROTC S4 S4 Instructions: Cadets will utilize this booking link to schedule an appointment with supply personnel. These appointments can be for initial gear issue, ASU/AGSU issue, an equipment request, or to turn in their gear at the end of the semester. Link: https://outlook.office365.com/owa/calendar/MHBNS4@bookings.uiowa.edu/bookings/ Please see the supply memorandum for reference.