Some Union teens choose LDS prom JOE MARUSAK Imagine a high school prom where dates are optional, the dress code is modest and the lyrics are clean. Imagine one that's free. Students from Union, Mecklenburg and surrounding counties have enjoyed such annual gatherings since 2003 through the Church of Jesus Christ of Latter-day Saints. The LDS proms, as the students and parents call them, are for ages 16-18 only and are held at a different LDS church throughout the region each year. This year's is March 15 at the LDS building on Lazy Lane in Mooresville. The proms draw up...