Nanoha was incredibly entertained by the show of tactics that 'Trevor' was putting on. By her standards they were really unorthodox, not least because using mass-based weaponry like bombs (even ones rigged on the scene) were considered taboo and only meant to be pulled out in extreme circumstances, but for someone who was not as well-versed in magical or physical combat as she was, tricks like these were probably inevitable.

"If you need to make things explode later, I can do that for you, but let's keep moving!"