?It?s like losing a brother,? fellow Marines say

Marine Gunnery Sergeant Thomas Sullivan, 40, survived two tours of duty in Iraq and earned a Purple Heart.

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Thomas Sullivan, a Springfield, Mass. native, was one of four Marines killed Thursday in an attack in Chattanooga.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/National/Images/e8f0f9a5-bbaf-4fe5-a8d8-a348f160f0f9.jpg Military identifies Marines slain in Tenn. shootings

In addition to the Marines killed, three people were wounded, including a sailor who was seriously hurt.

A courtroom sketch showed Boston Marathon bomber Dzhokhar Tsarnaev seated as transit police Sergeant Richard

Dzhokhar Tsarnaev transferred to Supermax prison

The Boston Marathon bomber is at the country?s most strict and secure prison while he appeals his death sentence.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/Metro/Images/trump150-8803.jpg Trump stirs pot with comment on bases being ?gun-free zones?

Donald Trump revived a national debate about who should be allowed to carry guns on military bases, and under what circumstances.

Evan Horowitz | Quick Study

What?s in the state budget?

Only one thing remains uncertain: the fate of the budget proposals Governor Baker vetoed.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/Metro/Images/18maine.jpg Two fatally shot by convicted sex offender, police say

Anthony W. Lord allegedly wounded three others, and beat another person up.

Woman dies after jump from Providence Place Mall garage

The 35-year-old was allegedly being chased by security guards from a high-end department store for shoplifting.

A street scene after an afternoon rain.

Suzanne Kreiter/Globe Staff

Cuba on the cusp

As diplomatic relations between Cuba and the US resume, this rare moment of transition provides an opportunity to see old and new Cuba, past and future, through the same lens.

The yard is framed by flowering plants.

home of the week

Five-bedroom Dorchester Victorian is close to T, beach

This home has a welcoming porch framed by flowering plants and a flat backyard that can be viewed from a broad wooden deck.

Terry Rozier is averaging five assists per game, tied for sixth in the 24-team Las Vegas summer league.

Danny Ainge quietly upgrading Celtics roster

Instead of one massive and franchise-altering deal, Ainge pushed forward with a collection of quick strikes.

A view of the icy plains found in Pluto?s heart-shaped region.

NASA/JHUAPL/SWRI

Frozen plains discovered in ?heart? region of Pluto

NASA relased more images and data from its New Horizons spacecraft Friday.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/Metro/Images/Castle%20Hill%201-419452.jpg ?Roaring Twenties? lawn party at Crane Estate hitting its stride

The Crane Estate in Ipswich will transform into a scene straight from the novel ?The Great Gatsby.?

Billy Joel performing with his band at Fenway Park on Thursday.

Music review

Hits and lots of heart from Billy Joel at Fenway Park

The beloved piano man has had the last laugh in a long career he has handled on his own terms.

Ground Game

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/Metro/Images/nh2.jpg Presidential campaign heats up in N.H.

Thursday was one of the busiest days so far in a state primary that?s more than six months away.

Opinion

JEFF JACOBY

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2015/07/17/BostonGlobe.com/EditorialOpinion/Images/Jeff_Jacoby_150px-1208.jpg Iran deal is not worthy of Nobel recognition

The consequences will be a nuclear arms race in the Middle East and a greater likelihood of war.

The Big Picture

Ye Aung Thu/AFP/Getty Images

Looking skyward

The sky can be a compelling subject or backdrop in a photograph, emanating many sources of light.