As a journalist, I can rewrite the article as follows:

Reg Jones, a seasoned federal retiree with over 30 years of experience in government service, has recently received a letter from the Department of the Interior informing him that his retirement benefits have been updated. With Medicare part A as his primary health insurance provider and BCBS Standard (106) as his secondary coverage, Reg is considering making a switch to GEHA High (313) in an effort to save money on his premiums.

As someone who has spent decades working in the federal government, Reg understands the importance of having access to quality healthcare during retirement. However, he is also aware of the complexity involved in switching from one health benefits plan to another. He wonders if this will be an easy process or if there are any hidden costs or limitations that he should be aware of before making a decision.

In addition to exploring his options for health insurance coverage, Reg is also curious about whether he can switch back to BCBS if he does not like GEHA after all. He has heard rumors that some retirees have successfully made this transition without any issues.

Lastly, Reg would like to know more about how many federal retirees use FEHB and Medicare part A only. While it is well-known that many retirees opt out of Part B due to its high cost and potential duplication with existing coverage, few studies have explored the specific demographics of those who choose not to enroll in this program altogether.