Thought I would post this reply on topic in case anyone is interested. The question asked what restrictions were in place for lighters as airline carry-on items. The answer took 2 weeks and is verbatim below:

Thank you for your email message. We apologize for the delay in
responding to your message. Passengers are permitted to carry lighters that
are fueled with liquified gas (Bic-type) or absorbed liquid (Zippo-type).

The limit is 2 lighters or 4 books of matches (excluding
strike-anywhere) per person.
Lighters with unabsorbed liquid fuel, containers of lighter fluid,
lighter refills, and matches (safety or stike-anywhere) are NOT permitted
in checked or carry-on luggage.
TORCH LIGHTERS ARE PROHIBITED IN CARRY ON AND CHECKED LUGGAGE.
TSA Contact Center