SALT LAKE CITY — Thousands of spectators lined South Temple and State Street on Pioneer Day to enjoy the annual Days of ’47 Parade, one of Utah’s longest-running and most celebrated traditions. Among the featured participants was the Castle Country Marching Band, made up of students from both Carbon and Emery High Schools. The Days of ’47 Parade honors the arrival of the Mormon pioneers into the Salt Lake Valley in 1847. The celebration traces i…