Good morningpublished at 09:42 BST 27 June 2018
It's another scorcher on the sun-kissed lawns of the Stormont estate but we're in search of heat of a different sort as we hit day 80 of the Renewable Heat Incentive Inquiry.
Today's witness is a senior Department of Enterprise, Trade and Investment (DETI) staffer.
Image source, AFPChris Stewart was the department's deputy permanent secretary during the period being considered by the inquiry and remains with DETI's successor - the Department for the Economy.
The session starts shortly - stay with us for live video and commentary throughout the day.