That explanation is sufficient. It must have been traumatising.

[ He can read between the lines well enough; he shuts that amusement off, as simply as flipping a switch. It's easy for him, something born of long practice. ]

Our memories are not the same. That much is evident.

[ He lets small fragments filter through; Colorman talking eagerly about playing with traffic lights - no mention of exploding buses there - Elecman complaining about a theft gone wrong;

'We almost got away with it, you know.'

Fireman worrying about his operator brooding about his loss. There is a muted emotion there, too; fondness this time. ]