2. Because of the helium consumption, Macy’s didn’t hold a parade from 1942-1944

When the U.S. entered World War II, Macy’s gave up its helium to the war effort due to rubber and helium shortages. They also donated the balloons, which consisted of about 650 pounds of scrap rubber, to the government. Another helium shortage in 1958 forced Macy’s to fill the balloons with air and hoist them with trucks and cranes along the parade route that year.