1. Military Sealift Command (MSC Norfolk) has a requirement for the USNS WALTER S. DIEHL (T-AO 193) FY 21 Mid-Term Availability (MTA). Please see attached Solicitation and supporting documents.

2. USNS WALTER S. DIEHL Solicitation N3220520R4002 Amendment 0001 is being incorporated for the following reasons:

     1. Changed the MTA duration from 50 calendar days to 64.

     2. Incorporated twenty-eight (28) answered RFCs.

     3. Incorporated revised Work Items 0010, 0011, 0103, 0107, 0115, 0202, 0206, 0453, 0506, and 0567.

Please see attached Amended Solicitation N3220520R4002-0001.

3. USNS WALTER S. DIEHL Solicitation N3220520R4002 Amendment 0002 is being incorporated for the following reasons:

     1. Incorporated the following RFCs: 029-041.

     2. Extended Solicitation closing date to 12PM, June 23, 2020, EST.

     3. Extended RFC due date to 1700 hours June 3, 2020 EST.

Please see attached Solicitation Amendment N3220520R4002-0002.

4. USNS WALTER S. DIEHL Solicitation N3220520R4002 Amendment 0003 is being incorporated for the following reasons:

     1. Added ODC Cost in Item 0002, Section B of the Solicitation.

     2. Incorporated RFCs 042 -048 and their associated supporting documents.

Please see attached Amended Solicitation N3220520R4002-0003.

5. USNS WALTER S. DIEHL Solicitation N3220520R4002 Amendment 0004 is being incorporated for the following reasons:

     1. To extend the Solicitation closing date to 12PM on June 26, 2020 EST.

     2. To add CLIN 0007 for WI 026 (CAT B) which was not included in the previous amendment (Amendment 0003).

     3. To revise Proposal Submission Requirement to allow for digital porposal via DoD SAFE or email without the submission of paper proposal.

     4. To revise J&A to add MAN ES in para. 5a as OEM in partnership with Fairbanks Morse.

Please see amended Solicitation 0004 and revised J&A.

6. USNS WALTER S. DIEHL Solicitation N3220520R4002 Amendment 0005 is being incorporated for the following reasons:

     1. To incorporate RFC 048 and revised RFC 001, 003, 004, 007, 008, 011, 020, and 028.

     2. To incorporate the following revised Work Items that were not incorporated in the previous amendments: 0010, 0011, 0102, 0103, 0107, 0115, 0162, 0202, 0206, 0453, 0504, 0506, and 0567.

Please see amended Solicitation 0005.