600K / 12M = 0.05 or 5% over 10 years. This means roughly 500 deaths / 100,000 annually. According to CDC (https://www.cdc.gov/nchs/fastats/deaths.htm) the death rate in the US is 850 deaths / 100,000. These aren't exactly apples to apples but that seems enough to say this doesn't look especially high-risk.
