After you return from Experimental Staff walk towards a group of people on the main street. They are accusing Talio of stealing money. Talk to Talio, he wants you to help prove that he is innocent. Agree to help him and he will tell you a crow flew out of the store with a bag and landed in a tree. Walk to the right and there will be a glow ontop of the box next to the vender, pick it up. Return to Talio and he will give you a General's Pen.