Report : Buying reinforced Humvees , not approved , possibly cost overrun . Defense Department knew of roadside bomb risk ahead of Iraq war , report unclear . In response to the report , Marine Corps spokesman Maj. Report : Department did n't immediately take available steps to get help . MRAPs are used to shield troops from mines and other hazards .
Report : Buying reinforced Humvees , not approved , possibly cost overrun . Defense Department knew of roadside bomb risk ahead of Iraq war , report unclear . Report : Department did n't immediately take available steps to get help . MRAPs are used to shield troops from mines and other hazards .