In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: Who was involved in Operation Enduring Freedom? Passage:In the 1970s and early 1980s the battalion furnished Combat Engineer Support to the Battalion Landing Teams (BLT) in the Mediterranean, the Caribbean, 29 Palms, Norway, and Guantanamo Bay, Cuba. From August 1982 to February 1984 Marines from 2nd Combat Engineer Battalion were part of the multinational peacekeeping force in Beirut, Lebanon. Late in October 1983, Combat Engineers landed and occupied the island of Grenada with the 22nd Marine Amphibious Unit. The battalion continued to provide Combat Engineer Platoons to the BLT's of the 22nd and 26th Marine Expeditionary Units and support elements of the division throughout the world. During April 1990, elements of the Battalion supported division units attached to Marine Forces Panama and participated in Operation Just Cause. In August 1990, Company D, while deployed aboard the off the coast of West Africa participated in Operation Sharp Edge assisting in the evacuation of civilians from Liberia. During Operation Desert Storm the Battalion deployed in support of the 4th MEB and the 2nd Marine Division leading the division through the myriad of obstacle belts into Kuwait. Recently engineers have participated in military operations in Bosnia, Haiti, and Cuba, and most recently, participating in Operation Enduring Freedom and Operation Iraqi Freedom.
b