I'm going with extrasensory vision powers linking these Justice Leaguers.
Aquaman - "sees" in the depths of the sea by sonar
Batman - Bats "see" by sonar, as well as Batman's night vision goggles
Green Lantern - Lantern lights the night or space (also keeps battery invisible)
Hawkman - hawks can see 8 times better than humans
Superman - x-ray vision, can see parts of the light spectrum undetectable to human eyes
Wonder Woman - Invisible Jet which she can apparently see.
Jim Johnson