Skiers watch a rescue helicopter of Swiss air rescue (REGA) starting during a mission at the Mount Titlis ski region near the Swiss mountain resort of Engelberg January 28, 2011. The country's strong currency is making many Europeans, Brits and Americans, who'd love to cut through the virgin snow of the Swiss Alps, think twice about spending their holidays and hard-earned cash in its ski resorts. To match story SWISSFRANC-SKIING REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: SPORT SKIING ENVIRONMENT TRAVEL)