and presented in the sophomore year of each class. The design is unveiled during the Ring Premiere in the fall term, which is followed months later by the Ring Delivery in the spring term. The latter has been a tradition since 1999 (Class of 2001), and is typically a formal occasion, often held off campus. Spring Weekend Spring Weekend is an annual event that includes performances by local as well as major recording artists as well as picnics, parties, home varsity games, and other celebrations. Steer Roast Steer Roast is an annual weekend of celebration and festivities hosted by Senior House. The first Steer Roast took place in the spring of 1964, and this MIT tradition was maintained for over fifty years on the first weekend of every May. In May 2014, Senior House celebrated its 50th anniversary of Steer Roast. In the past MIT presidents and professors attended, but this time no presidential appearance occurred, in spite of the usual invitations. Then in 2017, Steer Roast was to be held during the first weekend of May, but two weeks before that, the event was cancelled by MIT administrators. Soon afterwards, in spite of student and alumni pleas and protests, Senior House itself was closed down. In May 2017, Steer Roast was celebrated off campus and on schedule. Non-recurring and sporadic events Annual Spontaneous Tuition Riot This "annual" event is generally not scheduled in advance, but occurs spontaneously in the Spring in response to the MIT administration's announcement of the tuition increase for the following year. The "riot" usually consists of a noisy protest march through the campus, accompanied by traditional chants of "$$$ is Too Damn Much!", where "$$$" is replaced by the newly announced tuition amount. Participants generally let off steam in a good-natured way, and injuries or property damage are extremely rare. The tradition has died out and then been revived several times. Chrysalis, Monarch, and Daedalus human-powered aircraft From the 1970s until the early 1990s, MIT had a succession of student-led projects which designed, built, and flew human-powered aircraft (HPA), starting with BURD and BURD-II, and evolving into the flight of the Chrysalis in 1979, the first of the MIT HPA to successfully fly. Chrysalis went on to have over 44 pilots, including the first female pilots of an HPA. The Monarch B was a human-powered aircraft built by a student team in 1983 which won