22 veterans commit suicide everyday? Damn, that's like over 8k a year.
No, it's a myth that people keep repeating. With that number, the US forces would run out very quickly.
first hit on google:
http://taskandpurpose.com/truth-22-veteran-suicides-day/
explaining how they got the number from one source and that another more thorough one on roughly 9000 veteran deaths (deployed and non-deployed) over 9 years, found about 1900 suicides, which comes comes down to 1900 /9 = 211 per year and divided by 365 once more comes down to 0,58 US veteran suicides a day. Which is still one per two days, but not that freakishly high.
That doesn't mean clustering of the event within the data never happens though. It's like fatal car accidents: when a car crashes with four occupants, and they all die, suddenly the number goes up by four instead of just the driver. People looking at the statistic however, still assume it relates to individual drivers.