Va. Code § 44-155
Neither the Commonwealth nor the political subdivision of the Commonwealth whose fire-fighting forces are engaged pursuant to this chapter shall be liable or accountable in any way for or on account of any act or omission on the part of an officer or member of such forces while engaged pursuant to this chapter or for or on account of the operation, maintenance or use of any apparatus, equipment or supplies in connection therewith, nor shall any fire commissioner, fire chief or other superior officer or head of a fire department, fire company or other fire-fighting forces, acting pursuant to this chapter, be held liable or accountable in any way for or on account of any act or omission on the part of any of his subordinates without the political subdivision of their appointment while such subordinates are under the command of an officer other than himself.
Va. Code § 44-155