At East Side Access, a rock face loaded with dynamite is primed for a blast that will clear a crossover tunnel space for the Roadheader. At the last second, a meltdown at Grand Central Terminal causes the blast to be delayed, leaving undetonated powder in the tunnel wall. All work at East Side Access grinds to a halt while the sandhogs wait for permission to shoot. Meanwhile, frustration builds on Martin and Ryan’s 7-line subway line gang. Already plagued by technical difficulties, they find undetonated dynamite from a previous blast lodged in the rock face. These “bootlegs” are one of the biggest threats any Sandhog crew can face, and prevents them from drilling and blasting.