Sometimes I do wonder with all the history of the Yemen a BBC SME, from RUSI, can write this:
The retaking of a key air base to the north of the southern city of Aden is a major strategic victory for the Yemeni government in its fight against the Houthi-led insurgency.The al-Anad air base is important for a number of reasons.....is extremely important for operations against AQAP)....It was a badly kept secret that much of the US drone programme that targeted al-Qaeda operatives in the south of the country was based out of al-Anad....The recapture of the base and the surrounding areas will ensure that a long-term counter terror presence can be maintaine..
Link:http://www.bbc.co.uk/news/world-middle-east-33778116

Given that part of the anti-Houthi allaince is AQAP, let alone the stance of the Saudis, would the US be allowed to return and attack AQAP? I think not.

Then the BBC's own correspondent, Frank Gardner, reflects on the KSA's new assertiveness:
...the Saudi military has now been at war with Houthi rebels for more than four months....For Saudi Arabia, this is about more than just securing its southern flank.The Saudis fear they are being steadily encircled by Iranian allies and this is something they want to reverse.
Link:http://www.bbc.co.uk/news/world-middle-east-33825064