The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting quotes for the procurement of two Ground Proximity Warning Systems (NSN: 7RH 1680 016423175). The items require government source approval prior to award, and interested vendors must submit their proposals along with the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, which is available online. These systems are critical for aviation safety, providing essential alerts to prevent ground collisions. Proposals must be submitted via email to Joshua Seltzer by the specified due date, and early deliveries are preferred to meet fleet support needs.