That's how puffy ack did always work, nothing new.
It doesn't trace a line of sight (hence shooting "through" mountains) and
the reference altitude is always the strat targets own altitude.
Those of us that have been around for a while and still remember Mindanao: There was an airfield up to the north that was >3k and close to a factory which was at the base of the mountains at sea level. When the enemy got the zone base and the factory changed country affiliation, you were shot by puffy ack on the runway
