What does the cryptic crossword clue "Moved at speed, firing and looting (10)" mean?

The wordplay uses a charade (building blocks). RAN (synonym="moved at speed") + SACKING (synonym="firing") = RANSACKING The answer is RANSACKING.

Moved at speed, firing and looting (10)

Guardian Cryptic #29632 | 5 Down | 2025-03-03 flower