UPS calls looming strike vote a gesture. Is it? - Reuters The 1,400 U.S. mechanics who maintain United Parcel Service Inc's (UPS.N) worldwide fleet of 263 aircraft will hold a strike authorization vote next week, on the cusp of the company's peak shipping season. Should investors or customers care? It depends on whom you ask. UPS, the world's largest package delivery company, says the vote is meaningless. The union, Teamsters Local 2727, disagrees -- and at least one analyst thinks a walkout is possible, though he says a strike like the one that crippled UPS in 1997 is highly unlikely.