Park Police officers made 172 arrests during a series of demonstrations at the White House in the last week of April. These large demonstrations involved non-violent civil disobedience and required a significant personnel commitment from USPP units, including the patrol unit, the SWAT team, the motorcycle and horse mounted units, and criminal investigations. On April 27th, officers arrested 91 people; on April 29th, another 20; and on April 30th, 61 more. The April 27th arrest situation was unusual in that almost all of those arrested were disabled people in wheelchairs. Because of the unseasonably hot weather, the District of Columbia fire department assisted in the processing by providing continuous monitoring of the arrestees to assure that no one, including officers, suffered from any heat-related illnesses.