-Meanwhile-

"Surian!" Kyte's whispered shout sounds almost loud in the dark warehouse, but upon receiving no answer, he looks around and finds that Surian is gone.

He went to join the fighting. Kyte thinks to himself. I have no choice, then.

Kyte climbs down the ladder, using as much caution as possible to maintain his own safety and silence. He also keeps his eyes open, looking for any lights as he heads to the bottom of the ladder.

Spoiler
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Here's all the checks I assume you could possibly need...
Move Silently - (1d20+7)[26]
Spot - (1d20+4)[12]
Listen - (1d20+4)[11]
Search - (1d20+6)[13]