"In excruciating detail," she deadpans, more as a bid to let him know that she's intact than out of any real desire to go over that particular bit of sensory hell any more closely than she needs to.

Most of her focus is on the charge, keenly aware of the sensitivity of the task and the risk of getting caught. Her fingers feel thick, and she forces herself to slow down and avoid the rookie mistake of going for the rush job.

Finally, after what feels like an age and is perhaps a quarter of a minute longer than the first two took, she calls, "Third charge set."