exhalt,
the Blackbird (aka SR71) was retired in 1998 and used a special blend of JP-7 fuel - that cost 3 times more than conventional fuel. It may have flown over California and parts of the rest of the US. But not in the last 21 years.
You said
"Well just a point the Backbird plane is powered by ammonia and it will fly over California as well as the rest of the USA so yes ammonia will really fly in all the USA."
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