I just noticed that the Lifetime Senior (over 62) pass for access to the US National Parks is going to have a price increase. Current price is $10.00 and it will go to $80.00 the end of August. If you don't have one, you might consider one. This is a great deal for Seniors. You can visit USGS.GOV for more info.
I read some time back that the NPS was running on air. They are under funded and under staffed. Federal government just hasn't been willing to find any extra funding to send their way. They seem to think they fund/support themselves.