[Assignment: 48-DPA-04-25-08_SOI_K_SCA_50th] Events [at Main Interior and surrounding area marking] 50th anniversary of the Student Conservation Association (SCA) and its National Park Service partnership, with Secretary Dirk Kempthorne, [National Park Service Director Mary Bomar and Deputy Director Lyndi Harvey, Fish and Wildlife Service Director H. Dale Hall, U.S. Geological Survey Director Mark Myers, Forest Service Associate Chief Sally Collins, Washington Congressman Norman Dicks, and SCA founder Elizabeth Cushman Titus Putnam among the dignitaries joining more than 500 student environmental leaders from around the nation.] [48-DPA-04-25-08_SOI_K_SCA_50th_IOD_4419.JPG]