Tribal planner Luke Strong-Cvetich said Thursday he expects roughly 300 friends, family and community members to attend. Grinnell, a 57-year-old tribal council member and CEO of Jamestown Seafood, …Tribal planner Luke Strong-Cvetich said Thursday he expects roughly 300 friends, family and community members to attend. Grinnell, a 57-year-old tribal council member and CEO of Jamestown Seafood, …