Ohio Army National Guard (OHARNG) SPECIALIST (SPC) Cyndia Hartman, 437th Military Police (MP) Company (Co), stands sentry duty at the gate as several companies of OHARNG MP Companies depart in a convoy from the Army enclave at Rickenbacker Air National Guard Base (ANGB), Ohio (OH), to Fort Shelby, Mississippi (MS), to be assigned duties as part of Joint Task Force (JTF) Katrina in support of Hurricane Katrina relief operations