Once it was clear that the 504 Sit-In in San Francisco was going to continue past the first couple days the Black Panther Party members began bringing in daily hot dinners, mobile showers for the protesters in the H.E.W building and supplied a form of security. This security amounted to the Black Panther Party, who from their own work was familiar with the organization of federal agencies such as the FBI and San Francisco Police, was able to get food and supplies through the door.