Amendment 1: Attachments were unable to be opened, all files were reprinted and reuploaded. Amendment 2: Updated description and Attachment 4 52.212-1 - Instructions to Offerors Addendum to include Ms. Anna George at anna.george.2@us.af.mil as the primary personnel for which to submit questions. Amendment 3: Extended the deadline for submission of questions from 5 June 2026 to 8 June 2026 and updated quote validity from 7 October 2026 to 30 November 2026 within Attachment 4, FAR 52.212-1 (Instructions to Offerors Addendum). Updated the Combined Synopsis/Solicitation quote response deadline from 15 June 2026 to 30 June 2026. Amendment 4 incorporates the following changes: Extend solicitation by 1 week from 30 June 2026 at 7AM EDT to 7 July 2026 at 7AM EDT. Administrative: Posts the official Questions and Answers for FA449726Q0022. Attachment 1 PWS dated 23 June 2026: Corrected minor typographical errors and updated document date to 23 June 2026. Added Chapter 3.2 to table of contents. Corrected table of contents page for chapter 3.3 and 3.4. Attachment 3 Provisions and Clauses: Corrects the DoDAAC information. Removes the "Invoice 2-in-1" payment request for shipment deliverables from the WAWF clause. Removes DFARS 252.204-7019 and DFARS 252.204-7020. Adds R-DFARS 252.240-7997 and R-DFARS 252.204-7009. Attachment 5 Evaluation Addendum: Updates the computation methodology for the 6-month extension. Dover Air Force Base has a requirement for Aircraft Corrosion Control services in accordance with Attachment 1 – Aircraft Corrosion Control Services PWS to be delivered within 30 days. See Attachment 1 – Aircraft Corrosion Control Services PWS for a complete description of services. Important Timelines: Questions Close Date: 8 June 2026 at 12PM EDT Combined Synopsis/Solicitation Deadline: 30 June 2026 at 7 AM EDT Please submit all questions to Ms. Anna George at anna.george.2@us.af.mil and TSgt James Meeks at james.meeks.1@us.af.mil. Please see attached documents: 1. Combined Synopsis - Corrosion Control 2. Attachment 1 – PWS dated 14 May 2026 3. Attachment 2 – Quote Schedule 4. Attachment 3 – Provisions and Clauses 5. Attachment 4 – 52.212-1 - Instructions to Offerors Addendum 6. Attachment 5 – 52.212-2 - Evaluation Addendum 7. Attachment 6 – Wage Determination 2015-4217 Rev 33