ST. JOHNS COUNTY, Fla. – Two St. Johns County teenagers are facing felony charges after a tip to FortifyFL led investigators to what officials described as homemade firearms, explosive components and plans to commit an armed robbery. St. Johns County Sheriff’s Office deputies and the St. Johns County School District safety team began investigating on April 27 after receiving information through FortifyFL. Detectives said they identified two Switzerland Point Middle School students as the suspects: Julian Davis, 14, and a 13-year-old. NOTE: News4JAX is naming Davis because of the nature and seriousness of the charges against him. Between April 27-30,...