Simba followed Zazu to see what does he mean by "aliens". He was secretly thinking this was another one of Zazu's tricks. Zazu used to do tricks on him all the time when he was a cub. When they got to the area where the situation was taking place, Simba lowered down to blend into the grass. His eyes immediately widened up to see that the "aliens" we're using some kind of "tool". Simba looked over at Zazu who had a smirk on his face by seeing the shocked look on his face,

"Oh come on Zazu, it's like you've been always right.",whispered Simba

"I don't know! Seems like this a problem a king would solve, isn't it?", pointed out Zazu.

"Your right, Zazu.",said Simba.

He turned back to the event that is going on

"But, how am I'm going to talk to them without scaring them off?",asked Simba.

Then, he continued watching what is happening.