Cops in Augusta, Georgia, recently got a class on how to effectively deal with people who have PTSD.
The article covering the class, and possibly the class itself, focuses too much on veterans, ignoring the fact that others (cops included) can also get PTSD. But the advice is good:
"To help veterans focus, officers are encouraged to speak slowly, maintain eye contact and clearly explain their purpose for being there. They also should ask a person what he sees and hears to determine whether he is disassociating or not."
Here's an interesting parallel the author missed, while discussing why cops need to learn how to manage situations with people with PTSD: "Officers depend on their own hyper-vigilance to survive a shift and rolling up on a jumpy, aggressive person does not bode well." Hyper-vigilance happens to be one of the symptoms of PTSD.
Ga. cops get tips for contacts with persons suffering PTSD