Private Jet Services Group has an offer you might find hard to refuse. Its new Airline Contingency Program will provide last-minute worldwide airlift for your group in the event that natural disasters, political unrest, labor strikes, or commercial airline interruptions leave attendees stranded. To enroll, just provide the Hampton, N.H. — based company with basic information on upcoming trips, and, at no cost, PJSG will create multiple contingency programs and keep a stand-by agreement on file. Costs will apply only when airlift is engaged.