"DHS/FEMA uses a Push-Pull Strategy for distributing materiel. DHS/FEMA will develop a phasing plan for delivering material during the initial surge response to each incident scenario. Scenario-tailored resource/materiel packages will be pushed in phases so the regional logistics teams can focus on establishing the FOSA [Federal Operations Staging Area] and organizing their teams. The materiel and phased delivery plan will be coordinated for each scenario. Once the FOSA is established and the JFO [Joint Field Office] functional, the LCs [Logistics Center] will revert to a pull strategy for sustainment that waits for the regional or JFO request before shipping resources". (DHS, NRF Logistics Management Support Annex, September 2007 Draft, p. 11)