Beside autopsy is another way to get info about poisoning. If you search bookcase in Richard's room, you will find 'Empty jet canister' with traces of Jet. If you show it to Jimmy he recognise, that Jet in that canister was poisoned. Congratulation to finding SAD location. Wright's quest chain is the only way to get it. And very sweet loot is there - including new potentital companion. We will see how you get through puzzles to get in.
Whoa, didn't realize one can't access Sierra Army place without Wright giving you the location. Pretty neat how deep it can go, with new potential robot (sadly not enough science to get the best one) and of course the BB gun (the good one). And I could've just found the jet canister and skip all the travel and digging around! lol