Mike and Daisy work four engagement sites. Mine down through the record strata for evidence, build controls into the gaps management left open, and sign off at the desk. After dark the risks come out, and the only thing they cannot climb is a control. Everything you dig up goes in the bag: planks, bricks, crates, coffee, a hard hat, a headlamp. Duck to crawl into the records vault, and take the ladder back out.