For years, Richard Manning knew what he needed to cope with his physical pain, rage and PTSD - much of which he traced to a career-ending knee injury he suffered while on a domestic security detail with the Marines. Cannabis may not have been a cure-all, but it was the closest thing he'd ever had to one. Manning, a resident of Elk Grove, Calif., didn't have enough money to buy the daily amount of cannabis he needed, but he was able to get it through a network of charitable donors spawned by the Compassionate Use Act, a 1996 California law that allowed marijuana to be used for medical purposes. [continues 992 words]