1: The special forces were on the ground in noncombat roles  coordinating and guiding  the battle against Houthi forces and fighters loyal to former Yemeni President Ali Abdullah Saleh , the source said . 2: Houthis are battle-hardened guerrilla fighters and could cross into Saudi Arabia . 3: Saudi forces in non-combat roles  coordinating and guiding  fight against Houthis , source says .
1: Houthi forces 2: Houthis 3: Houthis