Is this emerald ash borer infestation?
We can't say for sure from your photo, but we would think that if these are ash trees, they are fully infested and if they aren't dead already, they will be soon.
Unfortunately, there are no treatment options for trees this far gone.
Here is our page on Emerald Ash Borer, with many links to more information: http://www.extension.umd.edu/hgic/invasives/emerald-ash-borer
If dead or dying ash trees are located in areas where their fall would threaten people or properry, they should be removed sooner rather than later as the structural integrity of the wood is badly affected within six months.