Tiffany Johnson was 26 and serving as Director of Hospitality at the Youth With a Mission training center in Arvada, Colorado, when she was killed on the morning of December 9, 2007. Originally from Chisholm, Minnesota, she had worked as a missionary in Egypt, Libya, and South Africa and was remembered by family and friends as adventurous, friendly, and committed to helping others.

That morning a former trainee, 24-year-old Matthew John Murray, arrived at the YWAM center after having been dismissed years earlier. When he was refused permission to stay, he opened fire, killing Johnson and fellow staff member Philip Crouse and wounding two others. Murray later carried out a separate attack at New Life Church in Colorado Springs, where two teenage sisters were killed; he was shot and wounded by a volunteer security guard, Jeanne Assam, and then died by a self-inflicted gunshot. Investigators noted Murray’s online postings expressing animosity toward Christians and found a letter addressed To God and books on serial murderers in his car.

If anyone knew Tiffany’s work at the Arvada center or saw something relevant on December 9, 2007, please share what is remembered.