An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Would you stake your life, right now, on the condition of your equipment?
NEWS | May 24, 2023

Tactical Expandable Shelters: Keep Cautions in Mind

BLUF: Two updated TMs contain set-up and breakdown warnings; one specific warning covers an area called the crush zone.

Soldiers setting up camouflage over an expandable shelter system
Photo by Jacob Caldwell
Two tactical expanded shelter TMs have been updated for 2023. They include:
  • TM 10-5411-201-13&P (Apr 23), which covers one-sided tactical expandable shelters:
    • ​PN 5-4-2828 (60 AMP) NSN 5411-01-124-1377
    • PN 5-4-3200 (100 AMP) NSN 5411-01-295-3433
  • TM 10-5411-200-13&P (Apr 23), which covers two-sided tactical expandable shelters:
    • PN 5-4-3118 (60 AMP) NSN 5411-01-136-9838
    • ​PN 5-4-3201 (100 AMP) NSN 5411-01-294-9866
While both TMs contain shelter set-up and breakdown warnings, one of the most important warnings concerns the area called the crush zone. This is the space that the ceiling and floor panels move through during the shelter opening and closing on the side of the container. If there’s a malfunction of either the fixed roof load balancers or the hinged roof support struts, the force of falling panels could result in the injury or death of anyone standing in the crush zone.

Note that the expandable section or sections (hinged floor and hinged sidewall together) weigh(s) 700 pounds (318 kg). Make sure that nobody is standing in the crush zone when quick release pins are released.
Shelter crush zone
The crush zone is on either or both sides of the shelter;
stay clear of these zones when deploying/closing expansible areas

While the crush zone is the most critical area to note and avoid, there are some other risks with setting up or taking down a shelter. They include:
  • Doors, cables, roofs, floors or wall hinges that can pinch fingers.
  • Tripping hazards because the shelter is raised off the ground.
  • Malfunction of the load balancer. The load balancer assembly is a spring-powered mechanism. Never completely release all the tension from the reel assembly or the cable wrapped around the drum will tangle. Don’t try to repair the load balancer. If the fixed roof load balancers fail, hinged panels could move or collapse without warning.
See the TMs for further cautions and warnings when working with these shelters.

Search for the TMs HERE. You'll need your CAC to access. Select the ETM/IETM button, then click Enter Site
Want to get better search results faster? 
Click the link below to access our "how to" guide
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an address. To update, change the domain to