Petty Officer 1st Class Stephen Allen, a U.S. Coast Guard Cutter Juniper crew member, lays dried rose petals over the RMS Titanic's resting site April 14, 2012. About 1.5 million rose petals were donated by Titanic Museum Attractions for the Titanic's centennial commemoration. (U.S. Coast Guard photo by Petty Officer 2nd Class Rob Simpson)