(a) In providing care and services under section
1710 of this title to veterans suffering from serious mental illness, including veterans who are homeless, the Secretary may provide (directly or in conjunction with a governmental or other entity)
(1) outreach services;
(2) care, treatment, and rehabilitative services (directly or by contract in community-based treatment facilities, including halfway houses); and
(3) therapeutic transitional housing assistance under section
2032 of this title, in conjunction with work therapy under subsection (a) or (b) of section 1718 of this title and outpatient care.