I see you assume that the question was reported just as it was asked. I am sure the ARMY means any records that would have any bearing whatever on this matter. What you asked about would give us about as much information as the heat treat numbers from the blast furnace where the steel was produced.
Maintenance records are kept at the troop/company/battery level. I'm sure that many years of records (depending on current DoD requirements) are back at their home post, but only current ones would have any meaning. Those being destroyed is not odd if the armorer's vehicle was hit.