Lightweight Portable Security (LPS) creates a secure end node from trusted media on almost any Intel-based computer (PC or Mac). LPS boots a thin Linux operating system from a CD or USB flash stick without mounting a local hard drive. Administrator privileges are not required; nothing is installed. The ATSPI Technology Office created the LPS family to address particular use cases. LPS-Public is a safer, general-purpose solution for using web-based applications. The accredited LPS-Remote Access is only for accessing your organization's private network.
This version is the same as the LPS-Public edition, but also includes OpenOffice and Adobe Reader software.

LPS Release Notes
Changes in Version 1.2.3
Maintenance release, released 29 July 2011

Fixed a problem with a RealTek wireless drivers
Fixed a bug with the sound mixer application
Added Java Web Start add-on to Firefox
Added support for USB CD/DVD drives
Updated bookmarks
 
http://www.spi.dod.mil/liposeFeatures.htm 
http://www.spi.dod.mil/index.htm 
http://www.spi.dod.mil/docs/Hashes.pdf

md5sum : adfbd54b571e03825c16fb3a6eda27b0  LPS-1.2.3_public_deluxe.iso