When the men went missing, SNCC and COFO workers began phoning the FBI requesting an investigation. The parents of the missing children were able to put so much pressure on Washington that meetings with President Johnson and Attorney General Robert Kennedy were arranged. Finally, after some 36 hours, Attorney General Robert F. Kennedy authorized the FBI to get involved in the search. FBI agents began swarming around Philadelphia, Mississippi, where Chaney, Goodman, and Schwerner had been arrested after they had investigated the burning of a local black church that was a center for political organizing. For the next seven weeks, FBI agents and sailors from a nearby naval airbase searched for the bodies, wading into swamps and hacking through underbrush. FBI director J. Edgar Hoover went to Mississippi on July 10 to open the first FBI branch office there.