Jannik and the statue

This blog post is a writing exercise from writers.stackexchange.com. Visit the Writers chat room every Tuesday for new writing exercises. This week's exercise: A 10-300 word story involving walking to, and perhaps riding, a subway train.
The crew cursed and yelled as they lowered the statue off the ship. It was surprisingly heavy despite being only life-sized. Jannik gasped as a rope snapped and it tumbled out of its rigging and onto the dock. The statue was only wrapped in thin cloth, yet Jannik was shocked to find that it was unharmed. They quickly loaded it onto a cart and left for the Academy.

“It’s clearly Infused,” said the Senior Initiate of Artifact Research.

“Yes, definitely solar powered,” said the Senior Initiate of Energy. “Good thing you kept it covered,” he said to Jannik.

“It may be an explosive,” said the Senior Initiate of Offensive Weaponry. “It needs further study, by a Senior Initiate,” he added. The implication was clear. Jannik was a mere Initiate. The fact that he had brought the statue all the way from the forbidden continent of Northam meant nothing.

Jannik fastened his cloak went down to wait for the subterranean train. His  anger was overcoming him so he forced himself to do a Computation Mantra, using the echos he heard to Compute a model of the train tunnels. When the train came through the echoes expanded his visualization and he realized how close he sat to the Vault itself.

It was an act of vandalism that could get him imprisoned, or worse, expelled, but he was too angry to care. He picked some items out of his pack and put them into his mouth, Infusing them with stored Essences. His teeth and tongue assembled it, and when it was ready he gently spat it into his hands. “Go on, little mole,” he said, as he set it on its way.

The Vault keepers were surprised to hear a voice from inside the Vault. When they entered they saw a thin shaft of sunlight streaming from a silvery hole, shining on an empty pedestal. Lying on the floor was a man. “Help me...” he said, then collapsed.