edit: Also, if somehow the radar had multiple heartbeats, we would have used "its heartbeats" rather than "their heartbeats."
disclaimer: I am not a grammarian or a linguist (IANAGOAL?)
edit: Also, if somehow the radar had multiple heartbeats, we would have used "its heartbeats" rather than "their heartbeats."
disclaimer: I am not a grammarian or a linguist (IANAGOAL?)