Little Nikita (1988)

Roy Parmenter is a veteran FBI agent who has spent the last 20 years trying to find the Russian agent who killed his partner whom he calls Scuba. When a couple of deep cover Russian agents are killed Parmenter thinks Scuba is the one doing it. The Russians who have received word from Scuba that if they want him to stop, they have to pay him. So they send a veteran Russian agent, Karpov to stop him. Parmenter was tasked with performing background checks on people applying for certain things requiring security clearance and when he comes across Jeffrey Grant who's applying to the Air Force Academy, he discovers that his parents' info is false. He also learns of Karpov coming into the country and suspects that he is here to stop Scuba and that Karpov went to the city where Jeffrey and his family live, so he decides to keep an eye on Jeffrey and his family.