| Item | Obligations |
|---|---|
| FISHER SAND & GRAVEL CO | $13.4B |
| BARNARD CONSTRUCTION COMPANY, INCORPORATED | $4.5B |
| DAVIE DEFENSE INC. | $3.5B |
| SOUTHWEST VALLEY CONSTRUCTORS CO | $2.5B |
| SLS FEDERAL SERVICES LLC | $2.4B |
| SPENCER CONSTRUCTION LLC | $2.4B |
| BOLLINGER SHIPYARDS LOCKPORT, L.L.C. | $2.2B |
| AMI METALS, INC | $2B |
| CSI AVIATION, INC | $1.3B |
| RAUMA MARINE CONSTRUCTIONS OY | $1.1B |
FISHER SAND & GRAVEL CO led all Homeland Security contractors with $13.4B, 19.3% of obligations.