I'm reading the other comments, and it makes my head spin. 

Here's why trails, parks, and other destinations are important and essential. Every year, 1 million visitors flood to Whidbey Island EAGER to spend their money to support the local economy. They willingly open up their wallets. 

I doubt an occasional jet flying, thousands of feet overhead, will deter anyone from visitor or have any health impact. 

There's a dramatically higher probability of an airplane crashing in the Bellingham, Everett, and Seattle metropolitan area than on Whidbey Island where there's only a handful of Navy aircrafts, private planes, and ultra-lights. One of the latter actually crashed across the street from my house.

Continue to develop Ebey's Reserve, enjoy the tourist dollars, and stop bickering over fabricated concerns!