The United States Air Force uses a distribution known as TENS (Trusted End Node Security), although it was previously called Lightweight Portable Security. It is developed by the Air Force Lab., A research center that belongs to the US Air Force and whose objective is to provide an operating system that allows navigation and remote connection within a secure network that they use for their work.
The distribution runs in Live mode from RAM, with no persistence options. The objective is obvious, to leave the least possible trace on the computer where it is running, erasing all the settings, saved data, etc., once the computer is turned off. In addition, for greater security, this distribution was evaluated by the NSA, certifying it for use in possible pandemics or public health emergencies ... The distro is distributed in 3 different editions, one called LPS public, another LSP Public Deluxe and LPS Remote Access.
La LSP Public Deluxe it is so called because it offers extra features over LSP Public, as it includes complementary software packages such as LibreOffice, Mozilla Thunderbird, and other generic programs. The LPS Remote Access version allows remote access to the DoD Enterprise Email (US Department of Defense) mail service and is compatible with CAC (Common Access Card) used by military and other government employees.
If you wish, you can download and use them. If you do you can try and inquire in its tools, although it does not have anything out of the ordinary, since it uses a lightweight Xfce desktop environment, a Linux kernel 4.1 in its latest version for the moment and Busybox, a package that as you know includes a multitude of Unix tools in a only executable and it is more common to see it installed on embedded computers. Likewise, you will be able to count on encryption tools such as Encryption Wizard (with PKI public key support) and many connectivity programs, such as Citrix Receiver, Minicom Terminal Emulator, Network Proxy, Ping, PuTTY, Remote Desktop, SSH, VMWare View Client, openDNS, etc.
Source - The replicant's look