In 1960-5721, the Rebbe held a special farbrengen to bid farewell to a large group of guests who had traveled to him from Israel via a chartered flight. The next afternoon, the Rebbe came out to the front steps of 770 to see the visitors off. Many New York-based chasidim were present, and they danced with the Israeli group before they boarded their buses to the airport. All the while, the Rebbe's looked on with a smile on his face. 5 Cheshvan
1. Torat Menachem vol. 29 p. 182