I use to be responsible for the fiber optic system for a large electric company. A large portion of our cable was OPGW, (optical power ground wire) which is that single cable you see at the very top of those towers. These are the guys that install and helped us maintain our cable. Even though my guys did not do the work we had to go through the class safety training so that we understood the situation during a restoration. Extremely intense but very cool stuff. Those guys make it sound like no big deal, they get paid very very well.