Ren's bombs arrived through a supply chain designed for emergencies.
Tamers with large beasts of good comfortable cargo capacity were the ones who transported them, creatures whose broad backs could carry the cargo without compromising flight maneuverability.
Detailed explanation had been given to the designated "bombers" about the weapons' nature. They were dangerous and fragile, requiring careful handling since they could also significantly hurt or even kill non-abyssal tamers if broken prematurely.
Once in Victor's flying squadron's hands, they first distributed them to the most agile flyers, one bomb per soldier for initial testing. The selected creatures were beasts with speed necessary for rapid delivery and immediate escape if something went wrong.
Victor, now more accustomed to the constant rhythm of enemy attack and defense after hours of sustained combat, studied the battlefield from his elevated aerial position.