Frequently when responding to an event, first responders are not there for a prolonged period of time. For example: Firefighters are usually fighting a fire for 30 minutes to an hour. However, during the event of the WTC attack, that was not the case. First responders were on-site of hours or even days, those that had PPE found that specific items were hindering them from doing their jobs. According to Jackson et al. (2002), the PPE (i.e. air tanks, masks, layers) used during the 9/11 attacks were not comfortable to wear for extend periods of time, this resulted in responders only wearing them intermittently or discarding them after a short period of time. Furthermore, some pieces that were provided to first responders did not fit together
