Is dry-firing helpful?

Lois reluctantly grabbed his radio and phoned his sister in.

*bzzt*

"Sis..."

*bzzt*

"She's not answering bro! We better get going with the training! Who's next?!" Lois exclaimed.

"Ah- Ah- Ah- don't turn that fucking radio off! Wait for her to answer! Dial her for a few times since she's in the compound." I said as I widened my eyes at him.

Nicole finally answered the radio and we found her walking to our place with Alicia. They both brought their guns which has now the bullets for the magazines and a few extras. Nicole still has both the Glock 26 and the Walther P22 I gave her before and Alicia still the same Walther P22. The guns were on their respective holsters that we're all using that is strapped to our belt where another strap runs from the holster then under our legs.

"Lois said you called for us?" Nicole asked.

"Yeah. Remind everyone, how many times have you two fired your guns?" I asked her.