Gerald Grinstein becomes Delta's seventh CEO. Delta celebrates 75 years of passenger service; returns to traditional "widget" logo. Delta continues work toward financial viability. Customer service and ramp operations efficiency enhanced with a new automated load instruction system for baggage, cargo and mail; expansion of touch-screen computers with real-time flight and gate information on baggage transfer tugs; and staggered zone system for aircraft boarding. Northwest and Continental join Delta as full members of SkyTeam alliance.