DD Form 1857 at a glance
What it is: This form requests additional storage in transit (SIT) at Government expense beyond initial authorization.
Who signs: The customer signs in 2d and the Transportation Office Representative signs in 7d.
A filled-in DD Form 1857 example: a request for additional SIT because housing is unavailable

How to fill out DD Form 1857, box by box
Section I, when additional SIT may be approved
When, due to conditions beyond the control of the customer, personal property in SIT at Government expense cannot be withdrawn during the current authorized SIT period, additional SIT for not more than an additional 90 days may be authorized in advance or subsequently approved by the Transportation Officer or the designated DoW Component or USCG Transportation Agent.
The reference is Paragraph JTR 0518-A for an Armed Forces Service Member (SM) and JTR 054307 for a DoW Civilian Employee (CE).
Section II, box 1, conditions beyond your control

Mark an X in each box of 1 that applies, as additional SIT of your personal property is necessary due to conditions beyond your control.
Mark 1a for serious illness or death of the customer or dependent.
Mark 1b for SM impending assignment to Government quarters.
Mark 1c for directed/intervening or long-term training assignment on TDY orders after arrival at the permanent duty station (PDS).
Mark 1d for nonavailability of suitable housing.
Mark 1e for awaiting completion of residence under construction or renovation.
Mark 1f for other circumstances that may apply; the specifics are mandatory in Block 8: REMARKS.
Box 1g, customer understanding

Mark 1g, Customer Understanding. You understand that this request is subject to approval based on supporting facts provided by you IAW JTR entitlements. In the case this requested extension is not approved, in order to preserve your right to file a claim against the TSP and/or the Government, you must arrange and conduct a joint inspection of the shipment (at your expense), prior to the expiration date, and complete a Loss and Damage AT Delivery Form. The expiration date becomes the “delivery” date of the shipment, and you can file a claim for any lost or damaged items noted on the Loss and Damage AT Delivery Form. Without an inspection, loss or damage cannot be presumed to have occurred during the period of Government SIT. Your intent to file a claim must be completed no later than 180 calendar days from the delivery/expiration date. Also, any claim against the TSP or the Government for loss or damage to personal property pursuant to authorized Government SIT must be filed within two years from the delivery/expiration date. If you choose to keep your personal property in SIT at your expense beyond the delivery/expiration date, it is recommended that you obtain private insurance coverage during that period.
Box 2, customer information and signature
Section III, Transportation Office

In Section III, Transportation Office, the Transportation Office enters the Installation Name in 3a and the Installation Address (Include Zip Code) in 3b.
The Transportation Office marks 4 when approval for an additional SIT is granted in accordance with paragraph JTR 0518-A (Armed Forces Service Members) and JTR 054307 (DoW Civilian Employees), due to conditions cited in Section II.
If approved, the Transportation Office enters in 5 the BL/MTO # for the storage authorization, which will expire on (DDMMYYYY).
The Transportation Office enters the Order Number in 6a, the Order Issuing Office in 6b and the Dated date (DDMMYYYY) in 6c.
The Transportation Office Representative enters the Name (Last, First, Middle Initial) in 7a, the Rank/Grade in 7b the Title in 7c and the Signature in 7d.
Page 2, customer name, BL/MTO # and box 8 remarks
Enter the Customer Name (Last, First, Middle Initial) and the BL/MTO #.
In 8. REMARKS, do not provide Personal Identifiable Information (PII) or medical information subject to the Health Insurance Portability and Accountability Act of 1996 (HIPAA).
Common questions about DD Form 1857
Who signs it?
The customer signs in 2d and the Transportation Office Representative signs in 7d.
Sources
[1] DD Form 1857 (MAY 2024), Storage in Transit (SIT) at Government Expense (the Official source link on this page).

