The unhappy time has come in which we have been obliged to shed blood. Shays, who was at the head of about twelve hundred men, marched yesterday afternoon about four o'clock, towards the public buildings in the battle array. He marched his men in an open column by platoons. I was sent several times by one of my aides, and two other gentlemen, Captains Buffington and Woodbridge, to him to know what he was after, or what he wanted. His reply was, he wanted [guns]. The answer returned was he must purchase them dear, if he had them. What circumstances led to the event described in document 4?