"Pilot Killed by Mysterious Airship. Silvery Bubble Hangs Over New York. Downs Army Plane in Burst of Flame. Vanishes at Terrific Speed."

"It's our little friend," said Thurston. And on his face, too, the lines were vanishing; to find this horror a reality was positive relief. "Here's the same cloud of vapor--drifted slowly across the city, the accounts says, blowing this stuff like steam from underneath. Airplanes investigated--an army plane drove into the vapor--terrific explosion--plane down in flames--others wrecked. The machine ascended with meteor speed, trailing blue flame. Come on, boy, where's that old bus? Thought I never wanted to fly a plane again. Now I don't want to do anything but."

Astounding Stories of Super-Science February 1930 — Part 24

"Headquarters," Thurston told him. "Washington--let's go!"

Astounding Stories of Super-Science February 1930 — Part 24

From Los Angeles to Washington is not far, as the plane flies. There was a stop or two for gasoline, but it was only a day later that they were seated in the War Office. Thurston's card had gained immediate admittance. "Got the low-down," he had written on the back of his card, "on the mystery airship."

Astounding Stories of Super-Science February 1930 — Part 24

"What you have told me is incredible," the Secretary was saying, "or would be if General Lozier here had not reported personally on the occurrence at New York. But the monster, the thing you have described.... Cy, if I didn't know you as I do I would have you locked up."

"It's true," said Thurston, simply. "It's damnable, but it's true. Now what does it mean?"

"Heaven knows," was the response. "That's where it came from--out of the heavens."

"Not what we saw," Slim Riley broke in. "That thing came straight out of Hell." And in his voice was no suggestion of levity.

"You left Los Angeles early yesterday; have you seen the papers?"

"They are back," said the Secretary. "Reported over London--Paris--the West Coast. Even China has seen them. Shanghai cabled an hour ago."

"Nobody knows. There were five seen at one time. There are more--unless the same ones go around the world in a matter of minutes."

Thurston remembered that whirlwind of vapor and a vanishing speck in the Arizona sky. "They could," he asserted. "They're faster than anything on earth. Though what drives them ... that gas--steam--whatever it is...."

"Hydrogen," stated General Lozier. "I saw the New York show when poor Davis got his. He flew into the exhaust; it went off like a million bombs. Characteristic hydrogen flame trailed the damn thing up out of sight--a tail of blue fire."