Step by Step Video Guide on how to properly deploy the BlueSky AL2 Lift Series Mast with Primary & Secondary Guying. Video features Best Practices and Helpful Hints. Best used as a visual training aid with the AL2 Lift Series Manual. BlueSky Portable Mast Systems are a replacement for older traditional Telescoping Military Mast Systems. The sectional tripod based design offers the ultimate in speed, portability and usability. When combined with BlueSky's suite of tool-less accessories any mast can quickly adapt to serve any application such as s RF or LTE Communications, Video Surveillance, Portable Power, or Lightning and Grounding Protection.