Personally I think in that case it's best to handwave that (assuming there's no rule that he can order them around on his own authority) as Sisko ordering them (either explicitly or by implication by making him a department head) to follow his orders. Also, I'd think his authority would only extend as far as engineering/operations matters and anything else that fell under his department's purview and those outside his department he can't order around (except for specific missions where they're put under his command like the trip to Empok Nor where Garek turn psycho); for example, he could order a junior Lieutenant gold shirt in Operations, but he couldn't order a blue shirt Ensign unless a higher ranked officer ordered them to follow him first.Revolverman wrote:Its funny you bring that up, as in another thread, there was a big debate on what the NCO ranks meant in Starfleet, as O'Brian had Ensigns (and I think a few times, a Lieutenant as underlings. Which is its own can of worms.MaxWylde wrote: One other little niggle I don't see much of in Starfleet is an NCO corps..
Also, in some other cases, they may just be bowing to his experience; e.g. in a close quarters phaser fight, if he started barking orders, unless they were stubborn and/or asses (or were veterans in their own right, in which case he probably wouldn't be barking orders to them anyway), then they'd probably follow those instructions and defer to his experience.
Similarly, over on TNG, although Crusher was a full commander, I think outside sickbay/medical matters she'd defer to lower ranked officers (e.g. Data and Geordi) within their departments if they had seniority (and those without seniority she'd follow their recommendations with reason (e.g. a Lieutant couldn't order her out of Engineering, but if they say "Standing next to that leaking reactor is a bad idea" then she probably wouldn't argue)).