Military
Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance
Human Factors; Procedure
I descended the flight of two below the MVA.  I gave them a block of 200 to 300 FT.  There was a low altitude alert and I advised the aircraft of the current altimeter and alert. I had the MVSA map to low and did not notice the MVA.
An I90 Controller reported issuing a flight of two military aircraft clearance to cruise below the MVA because he had his MVSA map set to low and did not see the MVA.