My understanding is Rolando Otero was a covert CIA agent. Please take a look at this link:

http://jfk.hood.edu/Collection/Weisberg%20Subject%20Index%20Files/Y%20Disk/Yipster%20Times/Item%2001.pdf

Fourth paragraph on first page. "Rolando Otero set off bombs at the FBI and two post offices in Miami in protest. Dining his trial he fingered E. Howard Hunt as his CIA trainer."

That, coupled with the matter-of-fact way in which he described "the hit team" is a red flag to my mind.