I just realized I made a typo on my essay and wrote: "district" instead of "Defense" for an organization I was talking about. Will this harm my chances? I didn't notice it. After I named the organization, I put its abbreviated expression as well, but I am still worried.
If it's a big deal, should I alert the colleges about it?
No one can give you the assurance you are looking for because each application reader is different. Some may overlook it completely and others might question the choice of word. It's like a dance or singing audition or job interview. No one is going to nail it 100% but hopefully, they will see your talent and potential regardless of the performance.
Now it's time to focus on RD applications.
I think one mistake won't harm your chances.
To be honest, they don't really care since it's a trivial issue (as it's not their college name). I think that they recognise organisations are usually called by "slang" names and different names to their official name and honestly, it doesn't take away from your character and what you can offer so don't worry--remember it's a holistic application process not one bent on catching tiny trivial errors.
Hope this helps x
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