This data analysis will be coupled with the data from the field experiments in Phase II to be conducted for both fire and EMS events. For EMS we will assess arrival of BLS and ALS resources in various time frames for cardiac and systemic trauma events. For fire events, we will assess 2, 3, 4, and 5-person crew sizes in relation to a first due engine and a full alarm assignment responding to a fire in a 2000 sq ft. single family, two story, detached dwelling. Crew sizes will also be assess in a high rise structure fire setting. These are the baseline events for us. Once we have base line data then we may assess greater risk environments in the future.