Chemical fire

The night sky was dark and unfriendly above the city.
The Stealth fighters were flying low, like soulless alien bats. They were looking for something - hunting for some poor, defenseless prey like an ancient flying reptile would be chasing warm blood and mammal flesh.
He could see the burning oil-wells at the outskirts of the city. Black trees of rabidly growing smoke were stretching their deadly branches towards the darkened sky.
The green, sick flame of some unknown chemical substance screamed and hissed its prayer to the demons of old. No warmth in the flames. It seemed like they burned with the chill of Death.
Another Stealth suddenly appeared just above the roof of the building behind him. Soundless and black. He ducked, even if he had the feeling they couldn’t see him, as much as they ever tried.
It slid across the rooftops for a few seconds, then hit the afterburner and took off into the night with the thunder of its engines shaking the ground and the buildings nearby. The sparks and flames from the plane were lighting up the streets, and he could see people there. Men, women, kids.
Families.
Scared.
Hiding.
They couldn’t see him.
He was invisible.