she was a chemist and accomplished military helicopter pilot before the outbreak. she ended up in chernarus attempting to drop off supplies for military use and ran out of fuel causeing to her to crash. she walked away as the only survivor. she only found out about the outbreak a day or so afterwards, when she walked into a completely vacant city. and walked into one of the infected, barely surviving by means of a fire axe from a nearby room. since that day she has been constantly looking over her shoulder. hearing the moans and shuffling feet of the undead not so far behind her. day to day survival has become a struggle. and she is not so trusting in the few people she has met. they all seem to be in it for thier own personal gains. the end result being allison slowly becoming somewhat reclusive, camping alone most times or maybe with one other person in a more infested area. each taking turns guarding as the other sleeps the few precious hours they get each night.