This perk is highly recommended for an anti-tank class, along with Extreme Conditioning and Satchel Charges. A bazooka is quick and effective at destroying tanks, about 2 rockets and one sticky to the back of a tank will destroy it.
If players have this perk equipped with Ordnance Training, their firepower when driving a tank is increased greatly.
This perk will allow players to have a higher probability of killing players with Martyrdom, but is very underused in favor of perks such as Stopping Power or Overkill.
A sniper might find this useful as it makes Bouncing Betties more reliable in defending their position. However, most snipers refuse to sacrifice Stopping Power, because if they have Fireworks, they will have to get chest, neck and head shots for one-hit-kills.