This is a modification to the notice entitled "Commercial Low Earth Orbit (LEO) Destination Contract (CLDC) Draft Request for Proposal" which was posted on July 6, 2026. You are notified that the following changes are made: The document titled "02_CLDC dSOW July 2026" has been replaced with "02_CLDC SOW July 2026 (No CUI Cover Page). The due date for responses is not extended. Offerors are responsible for monitoring this site for the release of the solicitation and any amendments. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). _____ THIS IS NOT A REQUEST FOR PROPOSAL. NO PROPOSALS ARE TO BE SUBMITTED IN RESPONSE TO THIS NOTICE This notice is issued by the NASA/Johnson Space Center to post draft RFP (DRFP) to solicit responses from interested parties. This document is for information and planning purposes and to allow industry the opportunity to verify reasonableness and feasibility of the requirement, as well as promote competition. The Commercial Low Earth Orbit Contract will acquire services for a commercially owned and operated Low Earth Orbit (LEO) Destination that can provide safe, reliable, and cost-effective end-to-end services to succeed the International Space Station (ISS). This will ensure NASA has a sustained human presence in LEO for Crew members to perform science and exploration. As part of this service, the Contractor(s) will design, build, and operate the Commercial LEO Destination (CLD) which covers all aspects of development and certification, including design, manufacturing, demonstration/testing, qualification, production, transportation vehicles, including operational missions (cargo/crew) and utilization activities post CLD certification. This DRFP is not to be construed as a commitment by the Government, nor will the Government pay for the information submitted in response. The Government may not respond to questions/concerns submitted. The Government will use the information to finalize the RFP as necessary. All comments or questions must be submitted electronically via email to Ashley Chaves at jsc-cldc@mail.nasa.gov, no later than July 24, 2026 at 8:00am Central. When responding reference "80JSC026R0021 DRFP". NASA Clause 1852.215-84, Ombudsman, is applicable. The Center Ombudsman for this acquisition can be found at: https://www.hq.nasa.gov/office/procurement/regs/Procurement-Ombuds-Comp-Advocate-Listing.pdf If a solicitation is released, then it and any additional documents will be available on Sam.gov. It is the offeror's responsibility to monitor this website for the release of the solicitation and amendments (if any). Potential offerors will be responsible for downloading their own copy of the solicitation and amendments, if any. NASA intends to publicize a listing of respondents to facilitate teaming arrangements. Should your firm desire not to be included in this listing, clearly indicate this desire in your response. DRFP Pre-Proposal Conference: T…