Mystery box: Leonard Kelley's suitcase, which became a lesson in critical thinking and research for Swift Creek middle schoolers. The excitement on Monday morning in Room 122 of Swift Creek Middle School in Chesterfield County stemmed from the revelations surrounding a long-lost valise belonging to Crewe native and World War II U.S. Navy veteran Leonard Daniel Kelley. History on occasion provides lyrical flourishes; Kelley and Florence Powell of Blackstone married when in their 40s and did not become parents. But since 2019, several classes of seventh graders turned history sleuths — under the guidance of teacher Pam Rockenbach Plahs, leader of the school's social studies department — became intent on finding the facts in the case of Seaman Kelley. All this happened at a school that is the home of the Sailors.