Three former leaders of the Federal Communications Commission are investing in a startup that seeks to solve one of 911’s biggest problems: Operators often can’t see the exact location of cellphone callers.

Thomas Wheeler, who left the agency earlier this year, felt regulations adopted during his tenure didn’t do enough to solve the problem. Passed in 2015, the rules gave wireless carriers six years to develop technology that could still be imprecise during 1 out of 5 calls.

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