Police in Missouri identified the armed suspect that entered a Springfield Walmart on Thursday as 20-year-old Dmitriy Nickolayvich Andreychenko,...charge of making a terroristic threat in the first degree...intent was "to cause chaos."...According to a Facebook page that appeared to be Andreychenko’s, he is originally from Portland, Oregon but lives with his wife in Springfield. He studied EMS/EMT at Ozarks Technical Community College.