. following the conclusion of that 30-day 201ccooling off 201d period , if no agreement has been reached , 201cself-help 201d ( as described below ) can begin unless a presidential emergency board ( peb ) is established . a peb examines the parties 2019 positions and recommends a solution . the peb process lasts for 30 days and ( if no resolution is reached ) is followed by another 201ccooling off 201d period of 30 days