In case of emergency, venires may be issued for grand jurors to be drawn and notified and to attend forthwith as in the case of petit jurors.
N.H. Rev. Stat. Ann. § 600:2
Issuance of Venires in Emergencies
Source
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.