National Guard "Operation Phalanx" Along Border

Here is an item regarding National Guard troops being used for border protection:

http://www.gsnmagazine.com/node/26129?c=border_security

The ongoing program called "Operation Phalanx" will be shifting from ground based National Guard troops to airborne border observation and support with CBP. National Guard personnel will include about 200 troops who will provide mobile aerial detection and monitoring across all four southwest border states, Texas, New Mexico, Arizona and California.

The article also mentions that the CBP Office of Air & Marine is attempting to upgrade their Blackhawk helicopters to newer UH-60L models.