has never been declassified. During a visit to Las Vegas 12 years ago, I found myself in the trailer home of Hank Meierdierck, a retired U.S. Air Force Colonel who had a long history of involvement in the agency’s secret airplane projects. Among his collection of airplane models was one of a raptor-like bird. Hank explained that this was a one-tenth-scale depiction of a UAV that was test-flown from Groom Lake about 20 times. Before Hank died, he wrote a short memoir of the project that can be found on

the website of the Roadrunners Association, a reunion group for veterans of Groom Lake. I made subsequent inquiries about Project Aquiline of three former CIA managers. Their recollections differed in some respects from Hank’s account. As far as ICalifornia (with another 25 in development), along with a couple in Hawaii. Now the East Coast is getting its own infrastructure. A handful of stations are up and running, and more are in the works in New York, New Jersey, Massachusetts, Connecticut and Rhode Island.

Commercial success, consumer challenges

Hydrogen is more established in the commercial market. There are more than 23,000 fuel cell-powered forklifts in operation at warehouses and distribution centers across the U.S. in more than 40 states, including at Amazon and Walmart facilities. There are dozens of fuel cell buses in use or planned in Ohio, Michigan, Illinois and Massachusetts, as well as California. Consumer hydrogen refueling stations are increasing throughout the world. Toyota and Honda are teaming up with the government in Quebec to build hydrogen