I'm reading some papers and there is some gramatical construction in the heads I'm not completely sure about the meaning. For example:
U.S. to declare Houthis a terrorist group, sparking fears it will worsen Yemen crisis
I can guess in the first there is the meaning:
SpaceX is Trying To Launch Tower Catch For Super Heavy
Or
SpaceX Has To Try Launch Tower Catch For Super Heavy.
but I'm not aware why this gramatical construction is using on heads of articles. Can you explain to me?