Actually, they have. I was personally present for one such call from a joint EOD (explosive Ordinance Disposal) team member who was having computer problems while attempting to disarm an IED.
As the IASO for their network, I helped out with part of his issue, as I had blocked that terminal, as it was infected with malware and shooting data to China as quickly as it was shooting data to the DoD.
I unblocked it, killed the malware, reinitialized all network services and he was back in business - while he was under fire.
We also decided that we needed to fine tune procedures for infected computers that were downrange, on the other end of a satellite fly away kit.
Brought back some memories though, I have hearing loss from an IED explosion, so taking care of those guys had a special priority to me.