The TSP receives a large volume of returned mail each year from addresses that are not current or valid. Marines who are contributing to TSP, have contributed to TSP or have chosen the Blended Retirement System are encouraged to check the address on file with the TSP by visiting TSP, then log into your account, select "Statements and Documentation" then open the most recent quarterly statement. If the address is not correct, make the appropriate changes at myPay under the link "TSP".