It was just another normal, average, run of the mill day in the leaf village. The sky was blue, there were clouds, ninjas everywhere, and that mountain with the Hokages on it was watching the village with several pairs of stone eyes.
Have you ever wondered if they are hidden cameras in the carvings' eyes and the Hokage use them to spy on the village? I have. I bet they do.
Anyway, Team Gai was just getting back from another training session when suddenly, Lee happened to look up at the sky and shout," Gai-Sensei look! Something is falling from the sky!"