keeping an eye out for those 〜
☆ keep an eye out for 〜 警戒する、探す　
・Police have asked residents to keep an eye out for anything suspicious.

(類) keep an eye on 〜  ≒ take care of 
・Could you keep an eye on my bag while I go to the toilet?
 #ニュースで学ぶ現代英語