Joining the long line of examples of concerning human subjects research experiments is a profile in The New Yorker (December 17). Writer Raffi Katchadourian reports on Operation Delirium, a secret military program that tested nerve gas, LSD, sarin and other agents on 5,000 soldiers near the Chesapeake Bay to look at how the drugs affected mental and physical functioning. The goal seems to have been to find weapons that could incapacitate groups of soldiers. Although the soldiers signed consent forms, a class-action lawsuit states that the soldiers were not aware that we were being exposed to dangerous chemicals.…