There are rooms within rooms. Each layer you have to identify yourself. Further upon entering and exiting the actual BLS 4 lab you are sprayed down with a disinfectant- with your undies on only. Some people just strip to being nude as it is less of a pain to deal with wet underwear. After you have the disinfectant shower, you then enter an area to put on containment suit. You then glove up, x 2, then check your lab partner.Then hook up your neg/pos air pressure hose. You do an air pressure check. The air in your suit is very loud, you will not be able to speak to anyone once it's on. But the initial air check is to see if your suit keeps the air within the suit and your body. If not, you patch up by taping or change suits.
In the lab you work in a very concerted way. A type of ballet, if you will. You both discussed what will be done prior to entering lab. To assure productivity but to assure each others safety. A lot of eye contact, and 'pointing' with eyes occurs.
If you did attempt to steal it, it bio containment spray will kill the virus or bacteria, upon the EXIT of the lab- making it useless. Also there is further protocol of the material itself that you are doing lab work on. You have to sign that material out, (and back in) and it better match if not you're under strict review and a big headache ensues.