Molenaar opened fire with an automatic rifle on all three officers and Lenny Holmwood, a friend of the gunman, who intervened.
They were shot in the first minutes of what became a 51-hour siege that saw many acts of bravery and ended with the gunman's suicide.
Nash, who was at the graduation ceremony at the college in Porirua, paid a special tribute to Dan.
"I am proud of them all. I also want to pay special tribute to one of the officers graduating today.
"Constable Dan Snee is receiving a special award for leadership.
"Dan has chosen a career in police 10 years after his uncle, Senior Constable Len Snee, died in the Napier siege."
Dan would be posted to Eastern District, Nash said.
Both Len and Dan played for the Hawke's Bay Magpies in the midfield.
Dan said he was wearing the blue uniform like his uncle before him because he wants to make his community a safer place.
"I'm here because I love working in team environments, and I'm looking forward to the work/life balance that the job will bring."
Dan is used to lining up in front of an audience as a rugby player who has played more than 30 tests for Spain; the last one was in March 2018.
His rugby skills have taken him around the world, but he'll soon be back home in Eastern District where he's keen to put his new policing skills to work.
The new constables will have a one-week break before starting duties in their districts with the Eastern District expected to get six new constables.