S.T.A.L.K.E.R. - Sharing cover during the blowout

The blowout is the time when only one thing matters - get into cover: some deep hole or building. The nearest place that could offer cover will be marked on your minimap by the PDA and will be updated constantly (i.e. when you move closer to another covered place, the PDA will mark it instead). Once you're safe or the blowout is over, the PDA will remove the mark.