His faith was like the radar of a bat, it took him through the darkness that surrounded him. It would guide him through everything that evil would throw at him. When his body gave up, God’s powers lifted him up and kept his heart thumping.

The most essential gift for a good writer is a built-in, shock-proof, shit detector. This is the writer's radar and all great writers have had it.

Seemingly minor yet persistent things penetrate the mind over time making it difficult to ever realize the impact; hence, though quite unfortunate, the most dangerous forms of corruption are those that are subtle and below the radar.

Love doesn't think like that. All right, it's blind as a bat--''Bats have radar. Yours doesn't seem to be working.

[T]hese friends were of the female persuasion, and while by and large they were bi and large, they still represented potential threats on [her] feminine radar.

Radar is too long in the tooth for fine detail.