This is a sources sought notice for a project at Fort Leavenworth, Kansas, to replace 21 exterior door assemblies on Building 635, including frames, hardware, and infill systems. The work requires a general contractor experienced in managing multiple task orders, with capabilities in construction scheduling, cost estimating, and quality control. Performance of services will take place at Fort Leavenworth, Kansas. No budget amount or submission timeline is specified in this notice. This is market research only, not a solicitation for proposals.