Yell as loud as you can.

All ready ?" "Hold on I What am I to yell ?" "Yell 'Help!' you idiot!" "Oh, all right." They raised their voices together in a loud appealing shout.

Then they listened.

Not a sound answered them.
"Once more," said Clint.

Again they shouted and again they listened.
Deep silence, broken only by the chirping of crickets.
"No good, I guess," said Clint despondently.
"Nobody home," murmured Amy.