Many male beetles are territorial and fiercely defend their territories from intruding males. The spirit resented mortals intruding from down below. Radar stations to direct interceptor aircraft to unidentified aircraft intruding on Alaskan airspace. However, they may also direct aggression towards intruding or subordinate males. Margaret resents Karin for intruding on her life. The bird is a close sitter, hissing and biting at an intruding finger. Aggressive behavior displayed by dominant males is predominantly directed towards intruding dominant males. Intruding on him while showering, Faye discovers Gren's secret. The Chinese, however, did not believe they were intruding upon Indian territory. These encounters are short, with the intruding male leaving after one or two aggressive interactions. The host rocks tend to be gabbros to syenite associated with intruding limestone. Some host birds can engage direct conflict with the intruding cuckoos. Masking sound is an effective solution in masking intruding noise. Swiss fighters began instead to force intruding aircraft to land at Swiss airfields. The nature of the intruding body depends its composition and depth.