So after you've had an exciting and fulfilling career in the service of your country, and have reached the 30 year mark, in addition to having an endless supply of stories to impress your family and friends, you will be assigned to one of three categories in the Retired Reserve.
Remote access VPN connections enable users working at home or on the road to access a server on a private network using the infrastructure provided by a public network, such as the Internet.
Internet Connectivity. An APN directly connects users to the Internet. Adding a specific APN to your device's browser lets you connect to the external network with which it is associated. Alternatively, a VPN works over an existing public network, and only works if the user has another means of connecting to the Internet.