There are 29. That is because there's 14 people before him, and 14 people after, him, and that's 28 and +1 for him and that;s 29. People often make mistakes and say that there's 30 because they count 15 before and 15 after, but there's actually 14 before and 14 after.
No one battle would stand out above the others.
What the author of Facing our Fears uses as support is a quote from a resercher at the University of Pennsylvania, David A. Yusko, Psy.D. He is the Clinical Director at the Center for the Treatment and Study of Anxiety (CTSA) in the Perelman School of Medicine at the University of Pennsylvania. Yusko especializes in many kinds of therapies, and in the case of this article in cognitive-behavioral treatment for social anxiety, panic disorder, specific phobias, and generalized anxiety.