The L-3 Guardian® was developed by L-3 Communication Systems-East under the NSA Secure Mobile Environment Portable Electronic Device (SME PED) Program. The L-3 Guardian® provides both secure and nonsecure communications in a single handheld device, operating over commercial cellular networks. Voice calls can be made at any security level from unclassified up to Top SECRET/SCI. Unclassified networks or classified networks such as SIPRNet may be accessed for web browsing, e-mail or custom apps. A built in CAC card reader supports authentication and encryption for interoperation with existing PKI infrastructures such as NIPRNet. The L-3 Guardian® is delivered with L-3 bundled applications for e-mail, web browsing, productivity apps and PDA functions.