In addition to the question of whether a bank branch would have that much cash available -- there's about $1.2T in circulation and about 100k bank branches, so

In addition to the question of whether a bank branch would have that much cash available -- there's about $1.2T in circulation and about 100k bank branches, so I'd put this in the category of "unlikely but not impossible" -- banks have a responsibility to treat unusual requests with caution. I've never taken more than $1000 of cash at a time; if I suddenly ask for $150k without having a very good explanation, I'd hope that the bank's response would be to phone the police and say "we think someone may be coercing Colin". Kidnapping and extortion are real things, and many people do make the mistake of not calling the police.