On Tuesday night, as I walked from the train and took a shortcut across the park I saw a woman chilling out while sitting on the bench next to the baseball diamond. I looked down at my phone for a minute or two and as I got closer, she was standing up and looked panicked.   I took out my earbud and asked, “are you okay?” She didn’t say anything but started pointing to her throat.   She was choking.   I ran over and she motioned to the top of her back, which  ...