Reno,
John had water problems and up here we have major tree problems. The POCO (JCP&L) Try to keep up with it. There are trees everywhere around here and if a branch isn't hitting a primary wire and blowing out the fuse on the pole. Then it would be most likely cause by squirrels. They like to get up on the primary and run along the wires. That isn't a problem till they decide to get off the wire 1 foot at a time and POW. 1 fried squirrel and 1 blown fuse. Sometimes the squirrel will drop and the reclosure will let the power flow again.
We also have people around here who do not want you to cut any trees at all. There is actually 1 town next to me that will prohibit the POCO from cutting trees. Guess what happen during Sandy! There were trees down on almost every street. The whole town was blacked out. They didn't get power for 12-14 days. It took a lot of time cutting up the trees.
