The Naval Air Systems Command intends to award a sole-source modification to Collins Aerospace for software sustainment, cybersecurity, and travel support in 2026 for E-6B mission avionics systems. Collins Aerospace is the only responsible source as the original equipment manufacturer and integrator, possessing the necessary technical data and facilities. This notice is not a request for competitive proposals, but capability statements may be considered within 15 days of publication. No budget amount or performance location is specified in the description. Interested subcontractors should contact Collins Aerospace directly.