In the "UFO" episode 'Sub Smash', an alien attack craft has secretly gone to Earth and is sinking ships: to the end of taking any survivors and harvesting their organs that way.
Head of S.H.A.D.O. Ed Straker (Ed Bishop) personally leads this mission, taking over command of SkyDiver 1, insisting that - with the crew transfer that was scheduled anyway - the best personnel are placed on board.
In the resulting underwater skirmish with the alien craft, SkyDiver is damaged - and this episode emphasises Straker's weakness: Claustrophobia - but not before said craft is detected (and therefore can be pursued & destroyed via the front aircraft section of SkyDiver) by the Sonar expert: a woman.
In all episodes where the aliens appear, they are male.
Said 'Aliens' are humanoid, indeed: are human. They coming from a world where the population is dying, thus their need to harvest our organs. A few theories among fans of this series is that all the women in their civilisation became sterile: and the remaining men need organ transplants to increase their lifespans. Or a disease wiped out half that world's population: and we know which half. Or...!
Anyhoo, Gerry Anderson - in his scenario that is "UFO" - created S.H.A.D.O. to consist of the absolute elite of Earth's forces, scientific minds etc. One member of the SHADOmobiles' crews is black; he is eventually promoted to pilot of one of the Interceptors (the first line of defence) on Moonbase. That particular sonar operator in SkyDiver (second line of defence). In his previous series "Captain Scarlet" the elite Angel Interceptor pilots are all women.
Gerry Anderson was progressive like that.