Lee Harvey Oswald
They settled in Dallas, with his mother and brother Robert. Oswald worked 3 months in a welding company, then worked in a printing shop from October until being fired in April 1963. Oswald was later suspected of the April 10 attempt to shoot General Edwin Walker, using a rifle (and handgun) he received through mail-order in March. Oswald and Marina quickly moved to New Orleans in April, but she returned to Dallas in late September 1963, when he traveled to Mexico with failed plans to go to Cuba and the USSR. Instead, he returned to Dallas and began working at the Texas School Book Depository on October 16, 1963. The FBI was investigating Marina as a possible Soviet spy. That was one month before the shootings of President Kennedy and Officer Tippit.