This opportunity is for the repair and/or modification of one BATTERY POWER SUPPL unit for the Navy, requiring labor, material, and facilities. The government intends to solicit only one source, Radiant Power Corp., as it lacks the necessary data for competition. Source approval is mandatory; the government will not delay award pending approval of new sources, and unapproved offerors must submit a detailed Source Approval Request package. All responsible sources may submit capability statements within a short timeframe following publication, but this is not a request for competitive proposals. No budget amounts or performance location are specified in the description.