# Parsons Corporation Engineering and defense contractor (NYSE: PSN) spanning critical infrastructure and national security work — transportation and water systems on one side, missile defense, cyber, and counter-drone on the other. Parsons won a track-two position on the August 2026 [[DHS $1.5B Counter-UAS IDIQ Award]]. The dual-book structure is why it belongs in the vault. Firms that sell both civil infrastructure and weapons systems have a lobbying interest in every category of federal spending at once, which makes them structurally different from pure defense primes: they benefit from an infrastructure bill and a defense supplemental equally, and their government-affairs operation is correspondingly broad. > Status: stub — expand with the federal revenue mix, the counter-UAS product line, and lobbying disclosures. ## See Also - [[DHS $1.5B Counter-UAS IDIQ Award]] - [[CACI International]] - [[Leidos]]