specialized skills question for a doctore

[nn123]

Hi ,

I am applying for B2 visa for my father, who is a doctor.
There is a question in DS160:
Do you have any specialized skills or training, such as firearms, explosives, nuclear, biological, or chemical experience?

What should I answer for this?
Should I answer 'Yes' considering his background in biology (Doctor)?

Thanks in advance,

[jnk]

It should be NO.