Scenario
It was said that various talents are being employed/forced-employed by the organisation, ranging from actress, announcer, scientists to snipers. Then we have Shiho who I believe is one of the main scientists in BO.
By the way things appeared, Akai Shuuichi knows Akemi Miyano is an affiliate of BO, if not a member herself, since he intentionally get involved with her to meet Sherry. Question: how did he know that those two sisters are in BO? Or that Shiho has a great influence inside?
Anyway, Akai definitely wanted to meet Shiho, and possibly worked with her to get deeper into the org. It can be that he only served as a bodyguard but knowing Shiho, she won't agree to it. And BO is a secret organisation, she won't just let her sister's bf know any illegal activities they do there. Not unless, he's a scientist himself or someone who can help her with her research.
Enter Subaru Okiya's Engineering alibi. I had discussed these inside one of the threads. Find it at your own convenience. But basically, I suspect that Akai Shuuichi is an engineering genius that made it to FBI and served in intel gathering with his wiz. He also gained kick-ass skills in sniping and combat.
Some people here discussed how Akai was able to get to the FBI, with a Japanese origin, and estimated the age when he could have joined there, and pointed out the strangeness of joining at such a young age. Maybe this theory can explain that. His intellect is needed for their intel gathering and the rules for FBI eligibility was bypassed for him.
Evidence in the manga shows his skills when he hacked Haibara's messaging system and Kogoro's computer, just to name a few. He might had been the one who installed the cameras around the Kudou mansion. And probably just a bluff, he was keen on meeting Agasa, the main supplier of Conan's tech gadgets, and willing to help on his research.
I know that this is a far-fetched theory. I just patched up things together but I wanna share this with you guys. What do you think?

