Shawn Johnson is detailing her family's close proximity to Monday's fatal school shooting in Nashville, Tennessee. The 31-year-old former gymnast took to her Instagram Stories after a 28-year-old woman shot and killed three students and three adults at The Covenant School, a private school in Nashville, before being killed by police.«I haven't been able to catch my breath since reading the news and getting a call from our school that they were on lockdown as well given the news,» Johnson wrote. «Shaking.