Without waiting to zip up, Johnny started toward the door. Baba jumped from the headglobe shelf and landed on his shoulder with a smack. The boy's hand was scarcely on the latch when the teacher turned around, her mouth making an O of surprise. Quickly, Johnny jerked open the door and dashed through, slamming it closed. There was a space of a few feet and then another door. Holding the second door open, Johnny snapped tight his headglobe, while Baba's small fingers pushed and pulled at the zippers fastening the armor. Both of them scanned the sky. No arrow-birds. Johnny grabbed a stone from beside the step and wedged it in the outer door so it could not close. To keep out these murderous flying lizards, all buildings were windowless and had double doors. When one door was open the other automatically locked. "Johnny, Johnny! You come right back in here!" a muffled voice called. Johnny sighed regretfully as he slipped out of the schoolhouse into the pearly green light of Venus. Baba on his shoulder, he started out at a dead run through the collection of windowless buildings that made up colony headquarters. The two had barely made it to the foot of a tall heavily leafed tree when the door of the main headquarters building began to open. "Up the meat tree!" Johnny yelled. Baba leaped from Johnny's shoulder and rolled himself into a furry blue ball as he fell. The little bear smacked the ground with the sound of a bouncing basketball and bounced high into the air! At the top of his bounce his arms and legs shot out; he hooked his claws into the trunk half way up the meat tree. Baba wasn't called a bouncing bear for nothing! Johnny jumped for the nearest branch. Weighed down by his arrow-bird armor, he was slow pulling himself up--too slow. Baba scurried down the trunk like a squirrel, his claws scattering bits of bark on Johnny. Hanging on with three paws he reached out and hooked his claws into Johnny's armor. One pull from that tiny but powerful arm and Johnny was sitting on the branch. From there up it was easy. The branches made a perfect ladder. Soon they were entirely surrounded by green shadowy leaves. Johnny carefully pushed aside a green fruit the size of a cantaloup and looked out. Striding across the dusty road came a tall man in headglobe and black armor--Captain Thompson of the colony guard. The teacher must have phoned for help. The man's square face was set in anger as he kicked the rock away from the schoolhouse door. The teacher stepped out and Johnny could hear their angry voices. After a moment Mrs. Hadley went back inside and the guard captain strode purposefully away toward Mayor Watson's office. Sitting on a branch swinging his legs, Baba winked a shiny blue eye. He reached over and patted Johnny on the spot where the boy was likely to pay for his pranks.