Final answer:
Frank Abagnale Jr. was able to travel around the country forging checks by assuming different identities and using his skills in forgery and deception. He would cash the forged checks and evade capture for a period of time.
Step-by-step explanation:
Frank Abagnale Jr. was able to travel coast to coast and forge checks due to his skills in forgery and deception. He posed as a Pan Am pilot, a doctor, and a lawyer, among other identities, to gain access to new cities and evade suspicion. Abagnale would then forge checks using stolen or fake identities and cash them for large sums of money. He was able to successfully execute this scheme for several years before being caught.