Based on the tweet "@Outlookindia This is courage. The driver of shot down bus showed no courage. A natural scare of looming death threat made him flee fast.", categorize the level of fear felt by the author. Select from the following: 0: no fear can be inferred, 1: low amount of fear can be inferred, 2: moderate amount of fear can be inferred, 3: high amount of fear can be inferred.