This is modification 6 to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is not extended.You are notified of the following: Amendment 0005 to the solicitation is posted as an attachment entitled, "80JSC022R0003RFP Amendment 0005 (SF30).pdf." (End of Modification 6) This is modification 5to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is not extended.You are notified of the following: Amendment 0004to the solicitation is posted as an attachment entitled, "80JSC022R0003RFP Amendment 0004(SF30).pdf." The files associated with the amendment are attached to this modification underthe file names in sub-bullets below. These files replace, in their entirety, all previous versions of the files that have been released; however, the previous version of the files remain in the list of attachments to retain the history. 80JSC022R0003 JETS II RFP A0004.pdf Attachment L-7- Past Performance Consent LetterA0004.pdf A copy of the RFP with Amendment 4changes marked has been posted as an attachment entitled, "80JSC022R0003 JETS II RFP A0004- Markup.pdf." The responses to the RFP Q&A has beenposted as an attachment entitled, "80JSC022R0003 JETS II RFP QnA Responses.xlsx." A change matrix detailing the changes made to the RFP has been posted as an attachment entitled, "80JSC022R0003 JETS II RFP Change Matrix A0004.xlsx." A clean/native version of the RFP has been posted as "80JSC022R0003 JETS II RFP A0004 - Clean.docx." (End of Modification 5) This is modification 4to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is extended to December 21, 2021.You are notified of the following: The due date for proposals is extended to December 21, 2021 by 4:00 PM (Central Time) Amendment 0003to the solicitation is posted as an attachment entitled, "80JSC022R0003RFP Amendment 0003(SF30).pdf." Per L.12ElectronicSubmission ofProposals ProposalMarkingand Delivery Through NASAs EFSS BOX, paragraph (b) "offerors interested in submitting a proposal in response to this solicitation should notify Shine Lin of their intent to submit a proposal at least 48 hours prior... [Offerors]are encouraged to coordinate the submission of a test file with Shine Lin/Amanda Graziosi several days in advance of the date and time specified for proposal submission in order to allow time to work through any submission issues." Offerorsshould provide the referenced notification and coordinate submission of a test file 48 hours prior to the original proposal due date, 4:00 PM December 15, 2021, as the email(s) and EFSS may not be monitored from December 15 - December 22. Subcontractors planning to submit files through EFSS are also encouraged to coordinate test file submissions. The Government is not responsibile for late proposals due to issues with the NASA EFSS platform. (End of Modification 4) This is modification 3to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is not extended.You are notified of the following: Amendment 0002to the solicitation is posted as an attachment entitled, "80JSC022R0003RFP Amendment 0002(SF30).pdf." The files associated with the amendment are attached to this modification underthe file names in sub-bullets below. These files replace, in their entirety, all previous versions of the files that have been released; however, the previous version of the files remain in the list of attachments to retain the history. An updated version of the Government Calculated Average Composite Labor Rates and Seniority Profile has been added as "JETS II Government Calculated Average Composite Labor Rates and Seniority Profile Rev 12-2-21.pdf" The Collective Bargaining Agreement has been added as "Attachment J-12 IAMAW Agreement for JETS II 2021.pdf" The JSC Flex Schedule has been added as "Super Flex Phase 2 Updated.pdf" (End of Modification 3) This is modification 2to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is not extended.You are notified of the following: Amendment 0001to the solicitation is posted as an attachment entitled, "80JSC022R0003RFP Amendment 0001(SF30).pdf." The files associated with the amendment are attached to this modification underthe file names in sub-bullets below. These files replace, in their entirety, all previous versions of the files that have been released; however, the previous version of the files remain in the list of attachments to retain the history. Attachment J-2 - DRL and DRD A0001.pdf 80JSC022R0003 JETS II RFP A0001.pdf A copy of RFP with Amendment 1 changes marked has been posted "80JSC022R0003 JETS II RFP A0001 - Markup.pdf." A signed copy of the RFP cover letter has been posted "80JSC022R0003 JETS II RFP Cover Letter - Signed.pdf,"no other changes were made from the version posted on November 15, 2021. Versions of the JETS II RFP files in native formats are included in thefoldernamed"Native Versions of JETS II RFPFiles," attached with this modification. The Preproposal Bulletin Charts have been added as "80JSC022R0003 JETS II Pre-Proposal Bulletin" (End of Modification 2) This is modification 1 to the solicitation entitled "JSC Engineering, Technology, and Science (JETS) II," 80JSC022R0003, which was posted on November 15, 2021. The due date for proposals is not extended.The registration details for the Pre-Proposal Pricing Conference are modifiedas follows: Please register for the eventby sending an email with the information below to [email protected] later than 5:00PM Central Time, on November 22, 2021. Subject: Pre-Proposal Pricing Conference RSVP Full Company Name: Company Address Commercial and Government Entity (CAGE) Code Company POC Company POC Phone Number Company POC email Add to the Interested Parties List? Company Size/Type (e.g. Large Business, SB, WOSB, etc) Please also include the name and emails of all additional attendees This is not an amendment to the solicitation; no terms have been changed. (End of Modification 1) This is a solicitation entitled JSC Engineering, Technology, and Science (JETS) II, 80JSC022R0003. You are notified of the following: The JETS IIRequest for Proposal (RFP) and associated documents have been posted. The due date for responses is as follows: Proposal is due no later than December 15, 2021at 4:00p.m. Central Time and all questions regarding this RFPare due no later than November 29, 2021 at 5:00p.m. Central Time. NASA/JSC will hold a Virtual Pre-Proposal Pricing Conference for the JETS IIprocurement on Tuesday, November 23, 2021, from 10:00 AM to 12:00p.m.Central Time. Please register for the eventby sending an email with the information below to [email protected] later than 5:00PM Central Time, on November 22, 2021. Subject: DRFP Q&A Session RSVP Full Company Name: Company Address Commercial and Government Entity (CAGE) Code Company POC Company POC Phone Number Company POC email Add to the Interested Parties List? Company Size/Type (e.g. Large Business, SB, WOSB, etc) Please also include the name and emails of all additional attendees Documents related to this procurement will be available over the Internet. These documents will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). Presolicitation synopsis 80JSC022R0003 was posted on October 29, 2021.