1 ? rocket? No idea what though - best offers ARIES or SAFIR
2 ?
3 LASCARS - Oriental sailors on European ships; CAR(t) in LASS (bird!)
4 Several good ideas, but I couldn't find any of them in the dictionary, unfortunately!
5 LAISSER-FAIRE - permissive, anagram serials afire (the imperative LAISSEZ is more common, but I don't see why the infinitive LAISSER shouldn't be used as well.)