Members of Purdue University's marching band are building a giant bass drum to be dropped into Lake Michigan from a glider as part of a flying machine competition.
WLFI-TV reports the Purdue glider will be launched off a 30-foot lakefront platform in Chicago on Saturday.
The goal of the "flugtag" competition is to fly a human-powered aircraft as far over the lake as possible.
Team captain Chris Yama-moto says band members chose the big drum design because it is iconic throughout the Big Ten.
The finished aircraft will be displayed outside the Neon Cactus in West Lafayette at 7 p.m. Thursday. The team will leave for Chicago on Friday.