Yikes! A birthday celebration at a Las Vegas trampoline park quickly turned chaotic earlier this month. What was meant to be a fun-filled day for 10-year-old Knox at Spy Ninjas HQ ended in panic, screams, and a serious injury. Meanwhile, the incident left family members shaken and viewers stunned.RELATED: Outta Control! Daycare Teacher Allegedly Tricks Toddlers With Laxatives, Parents Go Off (VIDEO)Birthday Celebration Turns Into Terrifying Zip Line FallKnox was reportedly celebrating his birthday at Spy Ninjas HQ on Feb.