Absolutely true.
There is a sharpened axe in every cockpit.
Even a small knife will show up on the x-ray and get a pilot in trouble with the authorities.
The UK, by the way, is the absolute worst for airline crews. They are rude, condescending, inept, rough, and boorish. They will stand 3" from your face to "check" your breath, looking to bust someone for alcohol, threaten you with arrest for even speaking while in line, rip your things out of your bags while searching for a supposed "violation". I know guys who will bid any European city but carefully avoid all UK flying because of the hassle of UK security. Same standards across all countries, but the level of rudeness varies dramatically. Even the French are polite and cheerful while screening crews, but not the UK.
They once took everything from my bag while searching for something. Every article of clothing dumped on their table. Wouldn't tell me why, or what they were looking for.
Finally - they found it.
A Chapstick had fallen into a crevice in my bag. Clearly a serious threat to national security. Worth pulling all my stuff out and dumping it.
Took me ten minutes to put everything back in, and there were three "security" people standing there telling me to hurry up because I was holding up the line. They continued to scold me for the Chapstick, telling me that it should have been in my one liter clear plastic bag. Except that it is wax, not a liquid or gel, and therefore, not part of the requirement to put it in the one liter bag. Very effective use of personnel - all standing around offering criticism and derision to "help" me get re-packed after they dumped everything out.
Love your country, but not your airport Nazis.