NICE its like having your own lil man cave(Or girl cave) gotta have a toilet I mean its 37 hours where are you gonna do your business gotta do it somewhere
I would suggest that they should have emptied the Sewage Tank after crossing the border and near the Target(s).
Of course it would be a Operational Matter to save fuel by reducing the weight of the Aircraft...
and a place to rub one or two out
If they did it right, they could empty the toilet so the contents go down with the bomb. The enemy would likely be busy at the time, but they could notify them afterwards.