This is a Sources Sought notice for the design, production, and retrofit of a new Brake Bleeder Valve Protective Cap for the F/A-18 and EA-18G aircraft. The cap must include a mechanical retention mechanism to prevent valve departure and hydraulic system failure, without affecting the valve's form, fit, or function. The anticipated start date is the second quarter of Fiscal Year 2027, and the government expects to procure up to 4,800 redesigned caps for retrofit. No specific budget amount or performance location is mentioned in the description. Interested vendors should submit a capability statement by the requested deadline to the provided government point of contact.