He felt his hand tighten on the flight helmet he held, swallowing hard.
1	He	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj	Discourse=causal-result:84->75:3|Entity=(14-person-giv:act-cf1*-1-ana)
2	felt	feel	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	his	his	PRON	PRP$	Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	4:nmod:poss	Entity=(110-object-new-cf2-2-sgl(14-person-giv:act-cf1*-1-ana)
4	hand	hand	NOUN	NN	Number=Sing	2	obj	2:obj|5:nsubj:xsubj	Entity=110)
5	tighten	tighten	VERB	VB	VerbForm=Inf	2	xcomp	2:xcomp	_
6	on	on	ADP	IN	_	9	case	9:case	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	Entity=(111-object-new-cf3-3-coref
8	flight	flight	NOUN	NN	Number=Sing	9	compound	9:compound	_
9	helmet	helmet	NOUN	NN	Number=Sing	5	obl	5:obl:on	_
10	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	11	nsubj	11:nsubj	Discourse=elaboration-attribute:85->84:0|Entity=(14-person-giv:act-cf1*-1-ana)
11	held	hold	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	acl:relcl	9:acl:relcl	Entity=111)|SpaceAfter=No
12	,	,	PUNCT	,	_	13	punct	13:punct	_
13	swallowing	swallow	VERB	VBG	VerbForm=Ger	2	advcl	2:advcl	Discourse=elaboration-additional:86->84:1
14	hard	hard	ADV	RB	Degree=Pos	13	advmod	13:advmod	SpaceAfter=No
15	.	.	PUNCT	.	_	2	punct	2:punct	_
