TheWoWDBI was at the same spot in the quest line as Mariana. Then I did this quest: http://www.wowhead.com/?quest=11030 "Our Boy Wants To Be A Skyguard Ranger" but not the follow up, and this quest was available from Chu'a'lor.
Quest
The Skyguard Outpost
A World of Warcraft quest in Blade's Edge Mountains. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
28, 51 for the outpost
Confirmed: Got this quest after doing the Apexis quests and "Our Boy Wants to Be A Skyguard Ranger". Have not completed the elite quest chain as pre-reqs nor any skyguard quests from Skettis.
Quest facts
LevelLevel 20-30
Quest ID11062
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(11062))
Description
{name}, we were wondering if you might be willing to visit our friends just to the north at the Skyguard Outpost? Sky Commander Keller and his Skyguard are here running missions for our mutual protection, and he's asked us to send along anyone that we feel would excel at helping out. That would be you! Head up there as soon as you can, and please, give him our regards.
Community notes from Wowhead · 11 comments
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Reward details
Reputation: Sha'tari Skyguard +10
An airborne military force created by Shattrath City to deal with the threats that loom in the highest reaches of Outland.
Reputation group: Shattrath City.
Other quests in Blade's Edge Mountains that reward Sha'tari Skyguard reputation: Bombing Run (+500), Bomb Them Again! (+500), Banish the Demons (+350), An Apexis Relic (+250), Guardian of the Monument (+500), Wrangle Some Aether Rays! (+350).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.