Two humanitarian workers killed . - A woman was shot in the head by a sniper while she and her husband were trying to flee their home after it had been hit with an airstrike. Saudi forces in non-combat roles `` coordinating and guiding '' fight against Houthis , source says .
Two humanitarian workers killed . Two Saudi border guards killed in exchange with rebels , Saudi Press Agency reports . Saudi forces in non-combat roles `` coordinating and guiding '' fight against Houthis , source says .