A map shows the movements of the Granite Mountain Hotshot crew as they fought the Yarnell Hill fire in late June. Arizona State Forestry Division hide caption

itoggle caption Arizona State Forestry Division

On Sunday in Phoenix, the 19 bodies of firefighters killed while battling a wildfire in central Arizona were driven to Prescott, where the "hotshot" team was based. Christian Petersen/Getty Images hide caption

itoggle caption Christian Petersen/Getty Images

Holding on to each other: Firefighters hug during a memorial service Monday in Prescott, Ariz. They were honoring 19 others who died Sunday. Michael Nelson /EPA/LANDOV hide caption

itoggle caption Michael Nelson /EPA/LANDOV

The Granite Mountain Interagency Hotshot Crew is shown in this undated handout photo provided by the city of Prescott, Ariz. The elite team of 19 firemen were killed on Sunday in one of the deadliest U.S. firefighting disasters in decades. City of Prescott/Reuters/Landov hide caption

itoggle caption City of Prescott/Reuters/Landov