Impossible, in my opinion.
A) The fuel would vaporize/particles would be too spread out for the fire to actually start.
B) The second jet would have to be low. Which isn't a great idea really. And I mean 15 feet low.
Inr eality the jet is moving too fast for the fuel to be combustable in a trail, and it could never be lit by the second jet unless it was practically scraping the ground.