Can you find the fourth person in this optical illusion?

Patrick DeIvernois and three friends can be seen raising a mini bottles of whiskey after completing the 2,200 mile Appalachian Trail. But many people can only see three arms in the image. https://www.dailymail.co.uk/femail/article-9286535/Can-fourth-person-optical-illusion.html?ns_mchannel=rss&ns_campaign=1490&ito=1490