bands of smooth muscle cells connected to each hair follicle to the papillary layer of the dermis that when contracted the hair follice is pulled uprights(created goose bumps).
Common Access Card (CAC) The CAC, a smart card about the size of a credit card, is the standard identification for active duty uniformed service personnel, Selected Reserve, DoD civilian employees, and eligible contractor personnel.
It should be noted that the identification card is different from a Veteran Health Identification card or a DoD Uniformed Services or retiree ID card. As such, the VA identification cards cannot be used as proof of eligibility to any federal benefits and does not grant access to military installations.